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== but it is a white to see a handsome youth ==
{{Redirect|Gaussian integration|the integral of a Gaussian function|Gaussian integral}}


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In [[numerical analysis]], a '''quadrature rule''' is an approximation of the [[integral|definite integral]] of a [[function (mathematics)|function]], usually stated as a [[weighted sum]] of function values at specified points within the domain of integration.
相关的主题文章:
(See [[numerical integration]] for more on [[quadrature (mathematics)|quadrature]] rules.)
<ul>
An ''n''-point '''Gaussian quadrature rule''', named after [[Carl Friedrich Gauss]], is a quadrature rule constructed to yield an exact result for [[polynomial]]s of degree 2''n'' − 1 or less by a suitable choice of the points ''x''<sub>''i''</sub> and weights ''w''<sub>''i''</sub> for ''i'' = 1,...,''n''.
 
The domain of integration for such a rule is conventionally taken as [−1, 1],
  <li>[http://coinauction.org/cgi-bin/auction/logout.cgi http://coinauction.org/cgi-bin/auction/logout.cgi]</li>
so the rule is stated as
 
  <li>[http://kamituki.3.pro.tok2.com/lds/epad/epad.cgi http://kamituki.3.pro.tok2.com/lds/epad/epad.cgi]</li>
 
  <li>[http://www.afzizhi.com/plus/feedback.php?aid=30 http://www.afzizhi.com/plus/feedback.php?aid=30]</li>
 
</ul>


== 'If you do not mind the words of the great elders ==
:<math>\int_{-1}^1 f(x)\,dx \approx \sum_{i=1}^n w_i f(x_i).</math>


No better than two weak<br><br>'as partners with the tiger, the tiger was eventually [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-8.html casio 腕時計 スタンダード] eat.'<br><br>Xiao Yan smiled, did not care to spend the evil demon king Senleng eyes, faint: 'Great elders, for day offerings were acting style, you should know better than anyone else, if the two together, it would be difficult to achieve real balance, sooner or later become masters of matter, time, spend days were probably have become another one of these offerings were a punishment. '<br><br>'Xiao [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-2.html カシオの時計] Yan, Hu said you less!'<br><br>heard [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-10.html casio 腕時計 データバンク] this, but it is the face flower brocade 'color' for a change, thundered.<br><br>For this woman, Xiao Yan is reason to ignore, looked at the white-haired old woman, said: 'If you do not mind the words of the great elders, in the future I might be able to become [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-14.html casio 腕時計 phys] the stars fell Court took were [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-9.html カシオ 掛け時計] a reliable ally, presumably to family division reputation, there would be no doubt the great elders, right? '<br><br>'Oh,' medicine 'Venerable prominent throughout
Gaussian quadrature as above will only produce accurate results if the function ''f''(''x'') is well approximated by a polynomial function within the range [-1,1]. The method is not, for example, suitable for functions with [[singularity (math)|singularities]]. However, if the integrated function can be written as
相关的主题文章:
<math>f(x) = \omega(x) g(x)\,</math>, <!--- Do not delete "\,": It improves the formula display in certain browsers. ---
<ul>
where ''g''(''x'') is approximately polynomial, and ''ω''(''x'') is known{{how|date=January 2014}}, then there are alternative weights <math>w_i'</math> such that
 
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  <li>[http://yl.0731zb.com/plus/feedback.php?aid=9 http://yl.0731zb.com/plus/feedback.php?aid=9]</li>
 
</ul>


== bone quiet last sentence just fallen ==
:<math>\int_{-1}^1 f(x)\,dx = \int_{-1}^1 \omega(x) g(x)\,dx \approx \sum_{i=1}^n w_i' g(x_i).</math>


But this is [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-9.html 電波時計 casio] also skilled are bold bone quiet, semi-holy order other strength, so too he has enough [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-11.html 腕時計 メンズ casio] capital disdain for everyone here, under this unspeakable gap, even days of order fighting skills are Unable to play the role reversal of the universe, however, this bone is never quiet thought, before the soul of the family who play against strong and Xiao Yan, too, are holding this kind of mentality<br><br>'ancient tribe Kaoru children, Kamijina blood owner, ancient tribe known as the most [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-4.html カシオ 電波ソーラー時計] perfect man of blood' bone quiet gaze, looking at not far from Kaoru children, surface touch dry smile on face, said: 'The potential indeed terrible, but now, you are still not old lady opponent! '<br><br>bone quiet last sentence [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-5.html gps 腕時計 カシオ] just fallen, their stature, but it is suddenly strange disappearance in place, to see this scene, Kaoru children face slightly changed, Jiaoqu suddenly Putui, then filled with [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-2.html カシオ腕時計 g-shock] gold 'color' flame of Yu Zhang , with a wave of terrible temperature, a space on the TV drama fiercely took over
Common weighting functions include
相关的主题文章:
<math>\omega(x)=1/\sqrt{1-x^2}\,</math> <!-- Do not delete "\,": it improves the display of the formula on certain browsers. --->
<ul>
([[Chebyshev–Gauss quadrature|Chebyshev–Gauss]]) and <math>\omega(x)=e^{-x^2}</math> ([[Gauss–Hermite quadrature|Gauss–Hermite]]).
 
  <li>[http://www.jsjcpm.com.cn/plus/view.php?aid=67826 http://www.jsjcpm.com.cn/plus/view.php?aid=67826]</li>
 
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</ul>


== even after these guys will be honest here waiting for them ==
It can be shown (see Press, et al., or Stoer and Bulirsch) that the evaluation points are just the [[root of a function|root]]s of a [[polynomial]] belonging to a class of [[orthogonal polynomials]].


Bodhi trees, a hint of awe, but also from the hearts [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-9.html カシオ 時計 プロトレック] rising into the sky, the face of this I do not know how many years the existence of the ancient fetish, and no one can keep the past and no wave of mind in front of it.<br><br>Hsiao go far [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-6.html 電波腕時計 カシオ] people fast, a few little knowledge of the distance, but [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-5.html カシオ 腕時計 スタンダード] just a few minutes, is to reach, and when Shaw arrived Bodhi trees go far beyond the number of baizhang, a line silhouette, but [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-6.html casio 腕時計 メンズ] it is the sudden appearance In the field of vision.<br><br>'Soul Jade?'<br><br>to see the group in step before the figure, Xiao Yan, who is also robust, even after these guys will be honest here waiting for them?<br><br>'careful'<br><br>Xiao Yan whispered a word, speed is gradually slowed down, then slowly falling not far from the body to the soul jade and [http://www.ispsc.edu.ph/nav/japandi/casio-rakuten-13.html 時計 カシオ] other people behind the eyes in which a pedestrian who sweep of the sweep, and then lift your eyes and look to That is not far from the Bodhi trees.
== Gauss–Legendre quadrature == <!-- The section "Other forms of Gaussian quadrature" below links to this section -->
相关的主题文章:
[[File:Legendrepolynomials6.svg|thumb|Graphs of Legendre polynomials (up to ''n'' = 5)]]
<ul>
For the simplest integration problem stated above, i.e. with <math>\omega(x)=1</math>,
 
the associated polynomials are [[Legendre polynomials]], ''P''<sub>''n''</sub>(''x''), and the method is usually known as Gauss–Legendre quadrature. With the ''n''<sup>th</sup> polynomial normalized to give ''P''<sub>''n''</sub>(1)&nbsp;= 1, the ''i''<sup>''th''</sup> Gauss node, ''x''<sub>''i''</sub>, is the ''i''<sup>''th''</sup> root of ''P''<sub>''n''</sub>; its weight is given by {{Harv|Abramowitz|Stegun|1972|loc=p.&nbsp;887}}
  <li>[http://www.mattia.ca/cgi-bin/newsboard.cgi http://www.mattia.ca/cgi-bin/newsboard.cgi]</li>
:<math> w_i = \frac{2}{\left( 1-x_i^2 \right) [P'_n(x_i)]^2}. \,\!</math>
 
Some low-order rules for solving the integration problem are listed below.
  <li>[http://www.qixiangwang.com/plus/view.php?aid=1041101 http://www.qixiangwang.com/plus/view.php?aid=1041101]</li>
 
 
{| class="wikitable" style="margin:auto; background:white;"
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! Number of points, ''n'' !! Points, ''x''<sub>''i'' !! Weights, ''w''<sub>''i''</sub>
 
|- align="center"
</ul>
| 1 || 0 || 2
|- align="center"
| 2 || <math>\pm \sqrt{1/3}</math> || 1
|- align="center"
| rowspan="2" | 3 || 0 || <sup>8</sup>⁄<sub>9</sub>
|- align="center"
| <math>\pm\sqrt{3/5}</math> || <sup>5</sup>⁄<sub>9</sub>
|- align="center"
| rowspan="2" | 4 || <math>\pm\sqrt{\Big( 3 - 2\sqrt{6/5} \Big)/7}</math> || <math>\tfrac{18+\sqrt{30}}{36}</math>
|- align="center"
| <math>\pm\sqrt{\Big( 3 + 2\sqrt{6/5} \Big)/7}</math> || <math>\tfrac{18-\sqrt{30}}{36}</math>
|- align="center"
| rowspan="3" | 5 || 0 || <sup>128</sup>⁄<sub>225</sub>
|- align="center"
| <math>\pm\tfrac13\sqrt{5-2\sqrt{10/7}}</math> || <math>\tfrac{322+13\sqrt{70}}{900}</math>
|- align="center"
| <math>\pm\tfrac13\sqrt{5+2\sqrt{10/7}}</math> || <math>\tfrac{322-13\sqrt{70}}{900}</math>
|}
 
== Change of interval ==
An integral over [''a'', ''b''] must be changed into an integral over [−1, 1] before applying the Gaussian quadrature rule. This change of interval can be done in the following way:
 
:<math>
\int_a^b f(x)\,dx = \frac{b-a}{2} \int_{-1}^1 f\left(\frac{b-a}{2}z
+ \frac{a+b}{2}\right)\,dz.
</math>
 
Applying the Gaussian quadrature rule then results in the following approximation:
 
:<math>
\int_a^b f(x)\,dx \approx \frac{b-a}{2} \sum_{i=1}^n w_i f\left(\frac{b-a}{2}z_i + \frac{a+b}{2}\right).
</math>
 
== Other forms ==
 
The integration problem can be expressed in a slightly more general way by introducing a positive [[weight function]] ω into the integrand,
and allowing an interval other than [−1, 1].
That is, the problem is to calculate
 
:<math> \int_a^b \omega(x)\,f(x)\,dx </math>
 
for some choices of ''a'', ''b'', and ω.
For ''a'' = −1, ''b'' = 1, and ω(''x'') = 1,
the problem is the same as that considered above.
Other choices lead to other integration rules.
Some of these are tabulated below.
Equation numbers are given for [[Abramowitz and Stegun]] (A & S).
 
{| class="wikitable" style="margin:auto; background:white;"
! Interval !! ω(''x'') !! Orthogonal polynomials !! A & S !! For more information, see ...
|- align="center"
| [−1, 1]            || <math>1\,</math> || [[Legendre polynomials]] || 25.4.29 || Section ''[[#Gauss–Legendre quadrature|Gauss–Legendre quadrature]]'', above
|- align="center"
| (−1, 1)            || <math>(1-x)^\alpha (1+x)^\beta,\quad \alpha, \beta > -1\,</math> || [[Jacobi polynomials]] || 25.4.33 (<math>\beta=0</math>) || [[Gauss–Jacobi quadrature]]
|- align="center"
| (−1, 1)            || <math>\frac{1}{\sqrt{1 - x^2}}</math> || [[Chebyshev polynomials]] (first kind) || 25.4.38 || [[Chebyshev–Gauss quadrature]]
|- align="center"
| [−1, 1]            || <math>\sqrt{1 - x^2}</math> || Chebyshev polynomials (second kind) || 25.4.40 || [[Chebyshev–Gauss quadrature]]
|- align="center"
| [0, ∞)        || <math> e^{-x}\, </math> || [[Laguerre polynomials]] || 25.4.45 || [[Gauss–Laguerre quadrature]]
|- align="center"
| [0, ∞)        || <math> x^\alpha e^{-x}\, </math> || Generalized [[Laguerre polynomials]] ||  || [[Gauss–Laguerre quadrature]]
|- align="center"
| (−∞, ∞) || <math> e^{-x^2} </math> || [[Hermite polynomials]] || 25.4.46 || [[Gauss–Hermite quadrature]]
|}
 
=== Fundamental theorem ===
Let <math>p_n</math> be a nontrivial polynomial of degree ''n'' such that
 
:<math>
\int_a^b \omega(x) \, x^k p_n(x) \, dx = 0, \quad \text{for all }k=0,1,\ldots,n-1.
</math>
 
If we pick the ''n'' nodes ''x''<sub>''i''</sub> to be the zeros of ''p''<sub>''n''</sub>, then there exist ''n'' weights ''w''<sub>''i''</sub> which make the Gauss-quadrature computed integral exact for all polynomials <math>h(x)</math> of degree 2''n'' − 1 or less. Furthermore, all these nodes ''x''<sub>''i''</sub> will lie in the open interval (''a'', ''b'') {{harv|Stoer|Bulirsch|2002|pp=172–175}}.
 
The polynomial <math>p_n</math> is said to be an orthogonal polynomial of degree ''n'' associated to the weight function <math>\omega (x)</math>. It is unique up to a constant normalization factor. The idea underlying the proof is that, because of its sufficiently low degree, <math>h(x)</math> can be divided by <math>p_n(x)</math> to produce a quotient <math>q(x)</math> of degree strictly lower than ''n'', and a remainder <math>r(x)</math> of still lower degree, so that both will be orthogonal to <math>p_n(x)</math>, by the defining property of <math>p_n(x)</math>. Thus
:<math> \int_a^b \omega(x)\,h(x)\,dx = \int_a^b \omega(x)\,r(x)\,dx. </math>
Because of the choice of nodes ''x''<sub>''i''</sub>, the corresponding relation
:<math>\sum_{i=1}^n w_i h(x_i) = \sum_{i=1}^n w_i r(x_i)</math>
holds also. The exactness of the computed integral for <math>h(x)</math> then follows from corresponding exactness for polynomials of degree only ''n'' or less (as is <math>r(x)</math>).
 
====General formula for the weights ====
The weights can be expressed as
:<math>w_{i} = \frac{a_{n}}{a_{n-1}}\frac{\int_{a}^{b}\omega(x)p_{n-1}(x)^{2}dx}{p'_{n}(x_{i})p_{n-1}(x_{i})}</math>  (1)
where <math>a_{k}</math> is the coefficient of <math>x^{k}</math> in <math>p_{k}(x)</math>. To prove this, note that using [[Lagrange interpolation]] one can express <math>r(x)</math> in terms of <math>r(x_{i})</math> as
:<math>r(x) = \sum_{i=1}^{n}r(x_{i})\prod_{\begin{smallmatrix}1\leq j\leq n\\j\neq i\end{smallmatrix}}\frac{x-x_{j}}{x_{i}-x_{j}}</math>
because r(x) has degree less than n and is thus fixed by the values it attains at n different points. Multiplying both sides by <math>\omega(x)</math> and integrating from a to b yields
:<math>\int_{a}^{b}\omega(x)r(x)dx= \sum_{i=1}^{n}r(x_{i})\int_{a}^{b}\omega(x)\prod_{\begin{smallmatrix}1\leq j\leq n\\j\neq i\end{smallmatrix}}\frac{x-x_{j}}{x_{i}-x_{j}}dx</math>
The weights <math>w_{i}</math> are thus given by
:<math>w_{i} = \int_{a}^{b}\omega(x)\prod_{\begin{smallmatrix}1\leq j\leq n\\j\neq i\end{smallmatrix}}\frac{x-x_{j}}{x_{i}-x_{j}}dx</math>
This integral expression for <math>w_{i}</math> can be expressed in terms of the orthogonal polynomials <math>p_{n}(x)</math> and <math>p_{n+1}(x)</math> as follows.
 
We can write
:<math>\prod_{\begin{smallmatrix}1\leq j\leq n\\j\neq i\end{smallmatrix}}\left(x-x_{j}\right) = \frac{\prod_{1\leq j\leq n} \left(x - x_{j}\right)}{x-x_{i}} = \frac{p_{n}(x)}{a_{n}\left(x-x_{i}\right)}</math>
where <math>a_{n}</math> is the coefficient of <math>x^{n}</math> in <math>p_{n}(x)</math>. Taking the limit of x to <math>x_{i}</math> yields using L'Hôpital's rule
:<math>\prod_{\begin{smallmatrix}1\leq j\leq n\\j\neq i\end{smallmatrix}}\left(x_{i}-x_{j}\right) = \frac{p'_{n}(x_{i})}{a_{n}}</math>
We can thus write the integral expression for the weights as
:<math>w_{i} = \frac{1}{p'_{n}(x_{i})}\int_{a}^{b}\omega(x)\frac{p_{n}(x)}{x-x_{i}}dx</math>  (2)
 
In the integrand, writing
:<math>\frac{1}{x-x_{i}} = \frac{1-\left(\frac{x}{x_{i}}\right)^{k}}{x-x_{i}} + \left(\frac{x}{x_{i}}\right)^{k} \frac{1}{x-x_{i}}</math> 
yields
:<math>\int_{a}^{b}\omega(x)\frac{x^{k}p_{n}(x)}{x-x_{i}}dx= x_{i}^{k}\int_{a}^{b}\omega(x)\frac{p_{n}(x)}{x-x_{i}}dx</math>
provided <math>k\leq n</math>, because <math>\frac{1-\left(\frac{x}{x_{i}}\right)^{k}}{x-x_{i}} </math> is a polynomial of degree k-1 which is then orthogonal to <math>p_{n}(x)</math>. So, if q(x) is a polynomial of at most nth degree we have
:<math>\int_{a}^{b}\omega(x)\frac{p_{n}(x)}{x-x_{i}}dx=\frac{1}{q(x_{i})}\int_{a}^{b}\omega(x)\frac{q(x)p_{n}(x)}{x-x_{i}}dx </math> 
We can evaluate the integral on the right hand side for <math>q(x) = p_{n-1}(x)</math> as follows. Because <math>\frac{p_{n}(x)}{x-x_{i}}</math> is a polynomial of degree n-1, we have
:<math>\frac{p_{n}(x)}{x-x_{i}} = a_{n}x^{n-1} + s(x)</math>
where s(x) is a polynomial of degree <math>n-2</math>. Since <math>s(x)</math> is orthogonal to <math>p_{n-1}(x)</math> we have
:<math>\int_{a}^{b}\omega(x)\frac{p_{n}(x)}{x-x_{i}}dx=\frac{a_{n}}{p_{n-1}(x_{i})}\int_{a}^{b}\omega(x)p_{n-1}(x)x^{n-1}dx </math>
We can then write
:<math>x^{n-1} = \left(x^{n-1} - \frac{p_{n-1}(x)}{a_{n-1}}\right) + \frac{p_{n-1}(x)}{a_{n-1}}</math>
The term in the brackets is a polynomial of degree <math>n-2</math>, which is therefore orthogonal to <math>p_{n-1}(x)</math>. The integral can thus be written as
:<math>\int_{a}^{b}\omega(x)\frac{p_{n}(x)}{x-x_{i}}dx=\frac{a_{n}}{a_{n-1}p_{n-1}(x_{i})}\int_{a}^{b}\omega(x)p_{n-1}(x)^{2}dx </math>
According to Eq. (2), the weights are obtained by dividing this by <math>p'_{n}(x_{i})</math> and that yields the expression in Eq. (1).
 
====Proof that the weights are positive====
Consider the following polynomial of degree 2n-2
:<math>f(x) = \prod_{\begin{smallmatrix}1\leq j\leq n\\j\neq i\end{smallmatrix}}(x-x_{j})^{2}</math>
where as above the <math>x_{j}</math> are the roots of the polynomial <math>p_{n}(x)</math>. Since the degree of f(x) is less than 2n-1, the Gaussian quadrature formula involving the weights and nodes obtained from <math>p_{n}(x)</math> applies. Since <math>f(x_{j})=0</math> for j not equal to i, we have
:<math>\int_{a}^{b}\omega(x)f(x)=\sum_{j=1}^{N}w_{j}f(x_{j}) = w_{i} f(x_{i}).</math>
Since both <math>\omega(x)</math> and f(x) are non-negative functions, it follows that <math>w_{i}>0</math>.
 
=== Computation of Gaussian quadrature rules ===
For computing the nodes <math>x_i</math> and weights <math>w_i</math> of Gaussian quadrature rules, the fundamental tool is the three-term recurrence relation satisfied by the set of orthogonal polynomials associated to the corresponding weight function. For ''n'' points, these nodes and weights can be computed in ''O''(''n''<sup>2</sup>) operations by an algorithm derived by Gautschi (1968).
 
==== Gautschi's theorem ====
Gautschi's theorem (Gautschi, 1968) states that orthogonal polynomials <math>p_r</math> with <math>(p_r,p_s)=0</math> for <math>r\ne s</math> for a scalar product <math>( , )</math> to be specified later, degree<math>(p_r)=r</math> and leading coefficient one (i.e. [[monic polynomial|monic]] orthogonal polynomials) satisfy the recurrence relation
:<math>p_{r+1}(x)=(x-a_{r,r})p_r(x)-a_{r,r-1}p_{r-1}(x)\ldots-a_{r,0}p_0(x)</math>
for <math>r=0,1,\ldots,n-1</math> where <math>n</math> is the maximal degree which can be taken to
be infinity, and where <math>a_{r,s}=(xp_r,p_s)/(p_s,p_s)</math>. First of all, it is obvious that the polynomials defined by the recurrence relation starting with <math>p_0(x)=1</math> have leading coefficient one and correct degree. Given the starting point by <math>p_0</math>, the orthogonality of <math>p_r</math> can be shown by induction. For <math>r=s=0</math> one has
:<math>(p_1,p_0)=((x-a_{0,0}p_0,p_0)=(xp_0,p_0)-a_{0,0}(p_0,p_0)=(xp_0,p_0)-(xp_0,p_0)=0.</math>
Now if <math>p_0,p_1,\ldots,p_r</math> are orthogonal, then also <math>p_{r+1}</math>, because in
:<math>(p_{r+1},p_s)=(xp_r,p_s)-a_{r,r}(p_r,p_s)-a_{r,r-1}(p_{r-1},p_s)\ldots-a_{r,0}(p_0,p_s)</math>
all scalar products vanish except for the first one and the one where <math>p_s</math> meets the same
orthogonal polynom. Therefore,
:<math>(p_{r+1},p_s)=(xp_r,p_s)-a_{r,s}(p_s,p_s)=(xp_r,p_s)-(xp_r,p_s)=0.</math>
However, if the scalar product satisfies <math>(xf,g)=(f,xg)</math> (which is the case for Gaussian quadrature), the recurrence relation reduces to a three-term recurrence relation: For <math>s\le r-1</math>, <math>xp_s</math> is a polynomial of degree less or equal to <math>r-1</math>. On the other hand, <math>p_r</math> is orthogonal to every polynomial of degree less or equal to <math>r-1</math>. Therefore, one has <math>(xp_r,p_s)=(p_r,xp_s)=0</math> and <math>a_{r,s}=0</math> for <math>s<r-1</math>. The recurrence relation then simplifies to <math>p_{r+1}(x)=(x-a_{r,r})p_r(x)-a_{r,r-1}p_{r-1}(x)</math> or
:<math>p_{r+1}(x)=(x-a_r)p_r(x)-b_rp_{r-1}(x)</math>
(with the convention <math>p_{-1}(x)\equiv 0</math>) where
:<math>a_r:=\frac{(xp_r,p_r)}{(p_r,p_r)},\qquad
b_r:=\frac{(xp_r,p_{r-1})}{(p_{r-1},p_{r-1})}=\frac{(p_r,p_r)}{(p_{r-1},p_{r-1})}</math>
(the last because of <math>(xp_r,p_{r-1})=(p_r,xp_{r-1})=(p_r,p_r)</math>, since <math>xp_{r-1}</math> differs from <math>p_r</math> by a degree less than <math>r</math>).
 
==== The Golub-Welsch algorithm ====
The three-term recurrence relation can be written in the matrix form <math>J\tilde{P}=x\tilde{P}</math>
where <math>\tilde{P}=[p_0(x),p_1(x),...,p_{n-1}(x)]^{T}</math> and <math>J</math> is the so-called Jacobi matrix:
:<math>
\mathbf{J}=\left(
\begin{array}{llllll}
a_0      & 1      & 0      & \ldots  & \ldots  & \ldots\\
b_1      & a_1    & 1      & 0      & \ldots  & \ldots \\
0        & b_2    & a_2    & 1      & 0      & \ldots \\
0  & \ldots  & \ldots & \ldots  & \ldots  & 0 \\
\ldots  & \ldots  & 0 & b_{n-2}  & a_{n-2}  & 1 \\
\ldots  & \ldots  & \ldots & 0  & b_{n-1}  & a_{n-1}
\end{array}
\right).
</math>
The zeros <math>x_j</math> of the polynomials up to degree <math>n</math> which are used as nodes for the Gaussian quadrature can be found by computing the eigenvalues of this [[tridiagonal matrix]]. This procedure is known as ''Golub–Welsch algorithm''.
 
For computing the weights and nodes, it is preferable to consider the symmetric tridiagonal matrix <math>\mathcal{J}</math> with elements <math>\mathcal{J}_{i,i}=J_{i,i}=a_{i-1},\, i=1,\ldots,n</math> and <math>\mathcal{J}_{i-1,i}=\mathcal{J}_{i,i-1}=\sqrt{J_{i,i-1}J_{i-1,i}}=\sqrt{b_{i-1}},\, i=2,\ldots,n.</math>
<math>\mathbf{J}</math> and <math>\mathcal{J}</math> are [[similar matrices]] and therefore have the same eigenvalues (the nodes). The weights can be computed from the corresponding eigenvectors: If <math>\phi^{(j)}</math> is a normalized eigenvector (i.e., an eigenvector with euclidean norm equal to one) associated to the eigenvalue <math>x_j</math>, the corresponding weight can be computed from
the first component of this eigenvector, namely:
 
:<math>
w_j=\mu_0 \left(\phi_1^{(j)}\right)^2
</math>
 
where <math>\mu_0</math> is the integral of the weight function
 
:<math>
\mu_0=\int_a^b \omega(x) dx.
</math>
 
See, for instance, {{harv|Gil|Segura|Temme|2007}} for further details.
 
There are alternative methods for obtaining the same weights and nodes in ''O''(''n'') operations using the Prüfer Transform.
 
=== Error estimates ===
 
The error of a Gaussian quadrature rule can be stated as follows {{harv|Stoer|Bulirsch|2002|loc=Thm&nbsp;3.6.24}}.
For an integrand which has 2''n'' continuous derivatives,
 
:<math> \int_a^b \omega(x)\,f(x)\,dx - \sum_{i=1}^n w_i\,f(x_i)
= \frac{f^{(2n)}(\xi)}{(2n)!} \, (p_n,p_n) </math>
 
for some ξ in (''a'', ''b''), where ''p''<sub>''n''</sub> is the monic (i.e. the leading coefficient is 1) orthogonal polynomial of degree ''n'' and where
 
:<math> (f,g) = \int_a^b \omega(x) f(x) g(x) \, dx . \,\!</math>
 
In the important special case of ω(''x'')&nbsp;= 1, we have the error estimate {{Harv|Kahaner|Moler|Nash|1989|loc=&sect;5.2}}
 
:<math> \frac{(b-a)^{2n+1} (n!)^4}{(2n+1)[(2n)!]^3} f^{(2n)} (\xi) , \qquad a < \xi < b . \,\!</math>
 
Stoer and Bulirsch remark that this error estimate is inconvenient in practice,
since it may be difficult to estimate the order 2''n'' derivative,
and furthermore the actual error may be much less than a bound established by the derivative.
Another approach is to use two Gaussian quadrature rules of different orders,
and to estimate the error as the difference between the two results.
For this purpose, Gauss–Kronrod quadrature rules can be useful.
 
Important consequence of the above equation is that Gaussian quadrature of order ''n'' is accurate for all polynomials up to degree 2''n''–1.
 
=== Gauss–Kronrod rules ===
{{main|Gauss–Kronrod quadrature formula}}
 
If the interval [''a'', ''b''] is subdivided,
the Gauss evaluation points of the new subintervals never coincide with the previous evaluation points (except at zero for odd numbers),
and thus the integrand must be evaluated at every point.
''Gauss–Kronrod rules'' are extensions of Gauss quadrature rules generated by adding <math>n+1</math> points to an <math>n</math>-point rule in such a way that the resulting rule is of order <math>3n+1</math>.
This allows for computing higher-order estimates while re-using the function values of a lower-order estimate.
The difference between a Gauss quadrature rule and its Kronrod extension are often used as an estimate of the approximation error.
 
=== Gauss–Lobatto rules ===
Also known as '''Lobatto quadrature''' {{Harv|Abramowitz|Stegun|1972|loc=p.&nbsp;888}}, named after Dutch mathematician [[Rehuel Lobatto]].
 
It is similar to Gaussian quadrature with the following differences:
# The integration points include the end points of the integration interval.
# It is accurate for polynomials up to degree 2''n''–3, where ''n'' is the number of integration points.
 
Lobatto quadrature of function ''f''(''x'') on interval [–1, +1]:
:<math>
    \int_{-1}^1 {f(x) \, dx} =
    \frac {2} {n(n-1)}[f(1) + f(-1)] +
        \sum_{i = 2} ^{n-1} {w_i f(x_i)} + R_n.
</math>
 
Abscissas: <math>x_i</math> is the <math>(i-1)</math><sup>st</sup> zero of <math>P'_{n-1}(x)</math>.
 
Weights:
:<math>
    w_i = \frac{2}{n(n-1)[P_{n-1}(x_i)]^2} \quad (x_i \ne \pm 1).
</math>
 
Remainder:
<math>
    R_n = \frac
        {- n (n-1)^3 2^{2n-1} [(n-2)!]^4}
        {(2n-1) [(2n-2)!]^3}
        f^{(2n-2)}(\xi), \quad (-1 < \xi < 1)
</math>
 
Some of the weights are:
 
{| class="wikitable" style="margin:auto; background:white;"
! Number of points, ''n'' !! Points, ''x''<sub>''i'' !! Weights, ''w''<sub>''i''</sub>
|- align="center"
| rowspan="2" | <math>3</math> || <math>0</math> || <math>\frac{4}{3}</math>
|- align="center"
| <math>\pm 1</math> || <math>\frac{1}{3}</math>
|- align="center"
| rowspan="2" | <math>4</math> || <math>\pm \sqrt{\frac {1} {5}}</math> || <math>\frac{5}{6}</math>
|- align="center"
| <math>\pm 1</math> || <math>\frac{1}{6}</math>
|- align="center"
| rowspan="3" | <math>5</math> || <math>0</math> || <math>\frac{32}{45}</math>
|- align="center"
| <math>\pm\sqrt{\frac {3} {7}}</math> || <math>\frac{49}{90}</math>
|- align="center"
| <math>\pm 1</math> || <math>\frac{1}{10}</math>
|}
 
==See also==
*[[Euler–Maclaurin formula]]
*[[Clenshaw–Curtis quadrature]]
 
== References ==
* {{AS ref| 25.4, Integration }}
*{{cite journal|first1=Donald G. |last1=Anderson
|title=Gaussian quadrature formulae for int_0^1 -ln(x)f(x) dx
|year=1965 | volume=19 | number=91 | pages=477–481 | journal=Math. Comp.
}}
* {{citation| title = Calculation of Gauss Quadrature Rules | journal = Mathematics of Computation |first=Gene H. |last=Golub |authorlink=Gene Golub| first2= John H. |last2= Welsch|volume= 23| issue= 106 |year= 1969|pages=221–230| jstor = 2004418| doi = 10.1090/S0025-5718-69-99647-1
}}
*{{cite article|first1=Walter | last1=Gautschi
|title=Construction of Gauss–Christoffel Quadrature Formulas
|journal= Math. Comp. | year=1968
| volume=22 | issue= 102
| pages=251–270
|doi=10.1090/S0025-5718-1968-0228171-0 | mr=0228171
}}
*{{cite article|first1=Walter | last1=Gautschi
|title=On the construction of Gaussian quadrature rules from modified moments
|journal= Math. Comp. | year=1970 | volume=24 | pages=245–260
|doi=10.1090/S0025-5718-1970-0285117-6  | mr=0285177
}}
* {{ cite article | first1=R. | last1=Piessens | title=Gaussian quadrature formulas for the numerical integration of Bromwich's integral and the inversion of the laplace transform
|year=1971 | volume=5 | number=1 | journal= J. Eng. Math. | pages=1–9
|doi=10.1007/BF01535429}}
* {{cite article|first1=Bernard | last1=Danloy | title=Numerical construction of Gaussian quadrature formulas for int_0^1 (-log x) x^alpha f(x) dx and int_0^infty E_m(x) f(x) dx | journal = Math. Comp. | year=1973
|volume=27 | number=124 | pages=861–869 | doi= 10.1090/S0025-5718-1973-0331730-X |mr=0331730}}
* {{citation | last1=Kahaner | first1=David | last2=Moler | first2=Cleve | author2-link=Cleve Moler | last3=Nash | first3=Stephen | title=Numerical Methods and Software | year=1989 | publisher=[[Prentice-Hall]] | isbn=978-0-13-627258-8 }}
*{{cite journal | first1=Robin P. | last1=Sagar
|title=A Gaussian quadrature for the calculation of generalized Fermi-Dirac integrals
|year=1991 | journal=Comp. Phys. Commun. | volume=66 | pages=271–275 |number=2-3
|doi=10.1016/0010-4655(91)90076-W }}
*{{cite journal | first1=E. | last1=Yakimiw| title=Accurate computation of weights in classical Gauss-Christoffel quadrature rules
|year=1996 | journal=J. Comp. Phys. | volume=129 | pages=406–430| bibcode=1996JCoPh.129..406Y |doi=10.1006/jcph.1996.0258}}
* {{citation | first1=Dirk P. |last1=Laurie
|title=Accurate recovery of recursion coefficients from Gaussian quadrature formulas
|year=1999 | volume=112 | number=1-2 | pages=165–180
|journal=J. Comp. Appl. Math. | doi=10.1016/S0377-0427(99)00228-9 }}
* {{ cite journal| first1=Dirk P. | last1=Laurie
|title=Computation of Gauss-type quadrature formulas
|year=2001 | pages=201–217 | volume=127 | number=1-2 | journal=J. Comp. Appl. Math. | doi=10.1016/S0377-0427(00)00506-9 }}
* {{citation | last1=Stoer | first1=Josef | last2=Bulirsch | first2=Roland | year=2002 | title=Introduction to Numerical Analysis | edition=3rd | publisher=[[Springer-Verlag|Springer]] | isbn=978-0-387-95452-3<!-- 0-387-95452-X --> }}.
* {{dlmf | title=§3.5(v): Gauss Quadrature | id=3.5.v | last=Temme | first=Nico M.}}
* {{Citation |last1=Press|first1=WH|last2=Teukolsky|first2=SA|last3=Vetterling|first3=WT|last4=Flannery|first4=BP|year=2007|title=Numerical Recipes: The Art of Scientific Computing|edition=3rd|publisher=Cambridge University Press| publication-place=New York|isbn=978-0-521-88068-8|chapter=Section 4.6. Gaussian Quadratures and Orthogonal Polynomials|chapter-url=http://apps.nrbook.com/empanel/index.html?pg=179}}
* {{citation | last1=Gil | first1=Amparo | last2=Segura | first2=Javier |last3=Temme | first3=Nico M. | chapter=&sect;5.3: Gauss quadrature| title=Numerical Methods for Special Functions | year=2007 | publisher=SIAM | isbn=978-0-89871-634-4 }}
* {{cite web | first1=R. J. |last1= Mathar | title=Gaussian quadrature of the integrals int_{-infty}^infty f(x) dx / cosh(x)
|url=http://vixra.org/abs/1303.0038 |year =2013}}
 
== External links ==
* {{springer|title=Gauss quadrature formula|id=p/g043510}}
* [http://www.alglib.net/integral/gq/ ALGLIB] contains a collection of algorithms for numerical integration (in C# / C++ / Delphi / Visual Basic / etc.)
* [http://www.gnu.org/software/gsl/ GNU Scientific Library] — includes [[C (programming language)|C]] version of [[QUADPACK]] algorithms (see also [[GNU Scientific Library]])
*[http://ans.hsh.no/home/skk/Publications/Lobatto/PRIMUS_KHATTRI.pdf  From Lobatto Quadrature to the Euler constant e]
* [http://numericalmethods.eng.usf.edu/topics/gauss_quadrature.html Gaussian Quadrature Rule of Integration – Notes, PPT, Matlab, Mathematica, Maple, Mathcad] at ''Holistic Numerical Methods Institute''
* {{MathWorld|id=Legendre-GaussQuadrature|title=Legendre-Gauss Quadrature}}
* [http://demonstrations.wolfram.com/GaussianQuadrature/ Gaussian Quadrature] by Chris Maes and Anton Antonov, [[Wolfram Demonstrations Project]].
* [http://pomax.github.io/bezierinfo/legendre-gauss.html Tabulated weights and abscissae with Mathematica source code], high precision (16 and 256 decimal places) Legendre-Gaussian quadrature weights and abscissas, for ''n''=2 through ''n''=64, with Mathematica source code.
* [http://people.sc.fsu.edu/~jburkardt/math_src/arbitrary_weight_rule/arbitrary_weight_rule.html Mathematica source code distributed under the GNU LGPL] for abscissas and weights generation for arbitrary weighting functions W(x), integration domains and precisions.
 
[[Category:Numerical integration (quadrature)]]

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In numerical analysis, a quadrature rule is an approximation of the definite integral of a function, usually stated as a weighted sum of function values at specified points within the domain of integration. (See numerical integration for more on quadrature rules.) An n-point Gaussian quadrature rule, named after Carl Friedrich Gauss, is a quadrature rule constructed to yield an exact result for polynomials of degree 2n − 1 or less by a suitable choice of the points xi and weights wi for i = 1,...,n. The domain of integration for such a rule is conventionally taken as [−1, 1], so the rule is stated as

Gaussian quadrature as above will only produce accurate results if the function f(x) is well approximated by a polynomial function within the range [-1,1]. The method is not, for example, suitable for functions with singularities. However, if the integrated function can be written as , where g(x) is approximately polynomial, and ω(x) is knownTemplate:How, then there are alternative weights such that

Common weighting functions include (Chebyshev–Gauss) and (Gauss–Hermite).

It can be shown (see Press, et al., or Stoer and Bulirsch) that the evaluation points are just the roots of a polynomial belonging to a class of orthogonal polynomials.

Gauss–Legendre quadrature

Graphs of Legendre polynomials (up to n = 5)

For the simplest integration problem stated above, i.e. with , the associated polynomials are Legendre polynomials, Pn(x), and the method is usually known as Gauss–Legendre quadrature. With the nth polynomial normalized to give Pn(1) = 1, the ith Gauss node, xi, is the ith root of Pn; its weight is given by Template:Harv

Some low-order rules for solving the integration problem are listed below.

Number of points, n Points, xi Weights, wi
1 0 2
2 1
3 0 89
59
4
5 0 128225

Change of interval

An integral over [a, b] must be changed into an integral over [−1, 1] before applying the Gaussian quadrature rule. This change of interval can be done in the following way:

Applying the Gaussian quadrature rule then results in the following approximation:

Other forms

The integration problem can be expressed in a slightly more general way by introducing a positive weight function ω into the integrand, and allowing an interval other than [−1, 1]. That is, the problem is to calculate

for some choices of a, b, and ω. For a = −1, b = 1, and ω(x) = 1, the problem is the same as that considered above. Other choices lead to other integration rules. Some of these are tabulated below. Equation numbers are given for Abramowitz and Stegun (A & S).

Interval ω(x) Orthogonal polynomials A & S For more information, see ...
[−1, 1] Legendre polynomials 25.4.29 Section Gauss–Legendre quadrature, above
(−1, 1) Jacobi polynomials 25.4.33 () Gauss–Jacobi quadrature
(−1, 1) Chebyshev polynomials (first kind) 25.4.38 Chebyshev–Gauss quadrature
[−1, 1] Chebyshev polynomials (second kind) 25.4.40 Chebyshev–Gauss quadrature
[0, ∞) Laguerre polynomials 25.4.45 Gauss–Laguerre quadrature
[0, ∞) Generalized Laguerre polynomials Gauss–Laguerre quadrature
(−∞, ∞) Hermite polynomials 25.4.46 Gauss–Hermite quadrature

Fundamental theorem

Let be a nontrivial polynomial of degree n such that

If we pick the n nodes xi to be the zeros of pn, then there exist n weights wi which make the Gauss-quadrature computed integral exact for all polynomials of degree 2n − 1 or less. Furthermore, all these nodes xi will lie in the open interval (a, b) Template:Harv.

The polynomial is said to be an orthogonal polynomial of degree n associated to the weight function . It is unique up to a constant normalization factor. The idea underlying the proof is that, because of its sufficiently low degree, can be divided by to produce a quotient of degree strictly lower than n, and a remainder of still lower degree, so that both will be orthogonal to , by the defining property of . Thus

Because of the choice of nodes xi, the corresponding relation

holds also. The exactness of the computed integral for then follows from corresponding exactness for polynomials of degree only n or less (as is ).

General formula for the weights

The weights can be expressed as

(1)

where is the coefficient of in . To prove this, note that using Lagrange interpolation one can express in terms of as

because r(x) has degree less than n and is thus fixed by the values it attains at n different points. Multiplying both sides by and integrating from a to b yields

The weights are thus given by

This integral expression for can be expressed in terms of the orthogonal polynomials and as follows.

We can write

where is the coefficient of in . Taking the limit of x to yields using L'Hôpital's rule

We can thus write the integral expression for the weights as

(2)

In the integrand, writing

yields

provided , because is a polynomial of degree k-1 which is then orthogonal to . So, if q(x) is a polynomial of at most nth degree we have

We can evaluate the integral on the right hand side for as follows. Because is a polynomial of degree n-1, we have

where s(x) is a polynomial of degree . Since is orthogonal to we have

We can then write

The term in the brackets is a polynomial of degree , which is therefore orthogonal to . The integral can thus be written as

According to Eq. (2), the weights are obtained by dividing this by and that yields the expression in Eq. (1).

Proof that the weights are positive

Consider the following polynomial of degree 2n-2

where as above the are the roots of the polynomial . Since the degree of f(x) is less than 2n-1, the Gaussian quadrature formula involving the weights and nodes obtained from applies. Since for j not equal to i, we have

Since both and f(x) are non-negative functions, it follows that .

Computation of Gaussian quadrature rules

For computing the nodes and weights of Gaussian quadrature rules, the fundamental tool is the three-term recurrence relation satisfied by the set of orthogonal polynomials associated to the corresponding weight function. For n points, these nodes and weights can be computed in O(n2) operations by an algorithm derived by Gautschi (1968).

Gautschi's theorem

Gautschi's theorem (Gautschi, 1968) states that orthogonal polynomials with for for a scalar product to be specified later, degree and leading coefficient one (i.e. monic orthogonal polynomials) satisfy the recurrence relation

for where is the maximal degree which can be taken to be infinity, and where . First of all, it is obvious that the polynomials defined by the recurrence relation starting with have leading coefficient one and correct degree. Given the starting point by , the orthogonality of can be shown by induction. For one has

Now if are orthogonal, then also , because in

all scalar products vanish except for the first one and the one where meets the same orthogonal polynom. Therefore,

However, if the scalar product satisfies (which is the case for Gaussian quadrature), the recurrence relation reduces to a three-term recurrence relation: For , is a polynomial of degree less or equal to . On the other hand, is orthogonal to every polynomial of degree less or equal to . Therefore, one has and for . The recurrence relation then simplifies to or

(with the convention ) where

(the last because of , since differs from by a degree less than ).

The Golub-Welsch algorithm

The three-term recurrence relation can be written in the matrix form where and is the so-called Jacobi matrix:

The zeros of the polynomials up to degree which are used as nodes for the Gaussian quadrature can be found by computing the eigenvalues of this tridiagonal matrix. This procedure is known as Golub–Welsch algorithm.

For computing the weights and nodes, it is preferable to consider the symmetric tridiagonal matrix with elements and and are similar matrices and therefore have the same eigenvalues (the nodes). The weights can be computed from the corresponding eigenvectors: If is a normalized eigenvector (i.e., an eigenvector with euclidean norm equal to one) associated to the eigenvalue , the corresponding weight can be computed from the first component of this eigenvector, namely:

where is the integral of the weight function

See, for instance, Template:Harv for further details.

There are alternative methods for obtaining the same weights and nodes in O(n) operations using the Prüfer Transform.

Error estimates

The error of a Gaussian quadrature rule can be stated as follows Template:Harv. For an integrand which has 2n continuous derivatives,

for some ξ in (a, b), where pn is the monic (i.e. the leading coefficient is 1) orthogonal polynomial of degree n and where

In the important special case of ω(x) = 1, we have the error estimate Template:Harv

Stoer and Bulirsch remark that this error estimate is inconvenient in practice, since it may be difficult to estimate the order 2n derivative, and furthermore the actual error may be much less than a bound established by the derivative. Another approach is to use two Gaussian quadrature rules of different orders, and to estimate the error as the difference between the two results. For this purpose, Gauss–Kronrod quadrature rules can be useful.

Important consequence of the above equation is that Gaussian quadrature of order n is accurate for all polynomials up to degree 2n–1.

Gauss–Kronrod rules

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If the interval [a, b] is subdivided, the Gauss evaluation points of the new subintervals never coincide with the previous evaluation points (except at zero for odd numbers), and thus the integrand must be evaluated at every point. Gauss–Kronrod rules are extensions of Gauss quadrature rules generated by adding points to an -point rule in such a way that the resulting rule is of order . This allows for computing higher-order estimates while re-using the function values of a lower-order estimate. The difference between a Gauss quadrature rule and its Kronrod extension are often used as an estimate of the approximation error.

Gauss–Lobatto rules

Also known as Lobatto quadrature Template:Harv, named after Dutch mathematician Rehuel Lobatto.

It is similar to Gaussian quadrature with the following differences:

  1. The integration points include the end points of the integration interval.
  2. It is accurate for polynomials up to degree 2n–3, where n is the number of integration points.

Lobatto quadrature of function f(x) on interval [–1, +1]:

Abscissas: is the st zero of .

Weights:

Remainder:

Some of the weights are:

Number of points, n Points, xi Weights, wi

See also

References

  • Template:AS ref
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    Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.

    A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running

    The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more

    There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
  • Template:Cite article
  • Template:Cite article
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  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
  • One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting

    In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang

    Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules

    Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.

    A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running

    The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more

    There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang
  • One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting

    In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang

    Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules

    Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.

    A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running

    The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more

    There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
  • One of the biggest reasons investing in a Singapore new launch is an effective things is as a result of it is doable to be lent massive quantities of money at very low interest rates that you should utilize to purchase it. Then, if property values continue to go up, then you'll get a really high return on funding (ROI). Simply make sure you purchase one of the higher properties, reminiscent of the ones at Fernvale the Riverbank or any Singapore landed property Get Earnings by means of Renting

    In its statement, the singapore property listing - website link, government claimed that the majority citizens buying their first residence won't be hurt by the new measures. Some concessions can even be prolonged to chose teams of consumers, similar to married couples with a minimum of one Singaporean partner who are purchasing their second property so long as they intend to promote their first residential property. Lower the LTV limit on housing loans granted by monetary establishments regulated by MAS from 70% to 60% for property purchasers who are individuals with a number of outstanding housing loans on the time of the brand new housing purchase. Singapore Property Measures - 30 August 2010 The most popular seek for the number of bedrooms in Singapore is 4, followed by 2 and three. Lush Acres EC @ Sengkang

    Discover out more about real estate funding in the area, together with info on international funding incentives and property possession. Many Singaporeans have been investing in property across the causeway in recent years, attracted by comparatively low prices. However, those who need to exit their investments quickly are likely to face significant challenges when trying to sell their property – and could finally be stuck with a property they can't sell. Career improvement programmes, in-house valuation, auctions and administrative help, venture advertising and marketing, skilled talks and traisning are continuously planned for the sales associates to help them obtain better outcomes for his or her shoppers while at Knight Frank Singapore. No change Present Rules

    Extending the tax exemption would help. The exemption, which may be as a lot as $2 million per family, covers individuals who negotiate a principal reduction on their existing mortgage, sell their house short (i.e., for lower than the excellent loans), or take part in a foreclosure course of. An extension of theexemption would seem like a common-sense means to assist stabilize the housing market, but the political turmoil around the fiscal-cliff negotiations means widespread sense could not win out. Home Minority Chief Nancy Pelosi (D-Calif.) believes that the mortgage relief provision will be on the table during the grand-cut price talks, in response to communications director Nadeam Elshami. Buying or promoting of blue mild bulbs is unlawful.

    A vendor's stamp duty has been launched on industrial property for the primary time, at rates ranging from 5 per cent to 15 per cent. The Authorities might be trying to reassure the market that they aren't in opposition to foreigners and PRs investing in Singapore's property market. They imposed these measures because of extenuating components available in the market." The sale of new dual-key EC models will even be restricted to multi-generational households only. The models have two separate entrances, permitting grandparents, for example, to dwell separately. The vendor's stamp obligation takes effect right this moment and applies to industrial property and plots which might be offered inside three years of the date of buy. JLL named Best Performing Property Brand for second year running

    The data offered is for normal info purposes only and isn't supposed to be personalised investment or monetary advice. Motley Fool Singapore contributor Stanley Lim would not personal shares in any corporations talked about. Singapore private home costs increased by 1.eight% within the fourth quarter of 2012, up from 0.6% within the earlier quarter. Resale prices of government-built HDB residences which are usually bought by Singaporeans, elevated by 2.5%, quarter on quarter, the quickest acquire in five quarters. And industrial property, prices are actually double the levels of three years ago. No withholding tax in the event you sell your property. All your local information regarding vital HDB policies, condominium launches, land growth, commercial property and more

    There are various methods to go about discovering the precise property. Some local newspapers (together with the Straits Instances ) have categorised property sections and many local property brokers have websites. Now there are some specifics to consider when buying a 'new launch' rental. Intended use of the unit Every sale begins with 10 p.c low cost for finish of season sale; changes to 20 % discount storewide; follows by additional reduction of fiftyand ends with last discount of 70 % or extra. Typically there is even a warehouse sale or transferring out sale with huge mark-down of costs for stock clearance. Deborah Regulation from Expat Realtor shares her property market update, plus prime rental residences and houses at the moment available to lease Esparina EC @ Sengkang
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010.
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  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
  • Many property agents need to declare for the PIC grant in Singapore. However, not all of them know find out how to do the correct process for getting this PIC scheme from the IRAS. There are a number of steps that you need to do before your software can be approved.

    Naturally, you will have to pay a safety deposit and that is usually one month rent for annually of the settlement. That is the place your good religion deposit will likely be taken into account and will kind part or all of your security deposit. Anticipate to have a proportionate amount deducted out of your deposit if something is discovered to be damaged if you move out. It's best to you'll want to test the inventory drawn up by the owner, which can detail all objects in the property and their condition. If you happen to fail to notice any harm not already mentioned within the inventory before transferring in, you danger having to pay for it yourself.

    In case you are in search of an actual estate or Singapore property agent on-line, you simply should belief your intuition. It's because you do not know which agent is nice and which agent will not be. Carry out research on several brokers by looking out the internet. As soon as if you end up positive that a selected agent is dependable and reliable, you can choose to utilize his partnerise in finding you a home in Singapore. Most of the time, a property agent is taken into account to be good if he or she locations the contact data on his website. This may mean that the agent does not mind you calling them and asking them any questions relating to new properties in singapore in Singapore. After chatting with them you too can see them in their office after taking an appointment.

    Have handed an trade examination i.e Widespread Examination for House Brokers (CEHA) or Actual Property Agency (REA) examination, or equal; Exclusive brokers are extra keen to share listing information thus making certain the widest doable coverage inside the real estate community via Multiple Listings and Networking. Accepting a severe provide is simpler since your agent is totally conscious of all advertising activity related with your property. This reduces your having to check with a number of agents for some other offers. Price control is easily achieved. Paint work in good restore-discuss with your Property Marketing consultant if main works are still to be done. Softening in residential property prices proceed, led by 2.8 per cent decline within the index for Remainder of Central Region

    Once you place down the one per cent choice price to carry down a non-public property, it's important to accept its situation as it is whenever you move in – faulty air-con, choked rest room and all. Get round this by asking your agent to incorporate a ultimate inspection clause within the possibility-to-buy letter. HDB flat patrons routinely take pleasure in this security net. "There's a ultimate inspection of the property two days before the completion of all HDB transactions. If the air-con is defective, you can request the seller to repair it," says Kelvin.

    15.6.1 As the agent is an intermediary, generally, as soon as the principal and third party are introduced right into a contractual relationship, the agent drops out of the image, subject to any problems with remuneration or indemnification that he could have against the principal, and extra exceptionally, against the third occasion. Generally, agents are entitled to be indemnified for all liabilities reasonably incurred within the execution of the brokers´ authority.

    To achieve the very best outcomes, you must be always updated on market situations, including past transaction information and reliable projections. You could review and examine comparable homes that are currently available in the market, especially these which have been sold or not bought up to now six months. You'll be able to see a pattern of such report by clicking here It's essential to defend yourself in opposition to unscrupulous patrons. They are often very skilled in using highly unethical and manipulative techniques to try and lure you into a lure. That you must also protect your self, your loved ones, and personal belongings as you'll be serving many strangers in your home. Sign a listing itemizing of all of the objects provided by the proprietor, together with their situation. HSR Prime Recruiter 2010
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External links

  • Other Sports Official Kull from Drumheller, has hobbies such as telescopes, property developers in singapore and crocheting. Identified some interesting places having spent 4 months at Saloum Delta.

    my web-site http://himerka.com/
  • ALGLIB contains a collection of algorithms for numerical integration (in C# / C++ / Delphi / Visual Basic / etc.)
  • GNU Scientific Library — includes C version of QUADPACK algorithms (see also GNU Scientific Library)
  • From Lobatto Quadrature to the Euler constant e
  • Gaussian Quadrature Rule of Integration – Notes, PPT, Matlab, Mathematica, Maple, Mathcad at Holistic Numerical Methods Institute


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  • Gaussian Quadrature by Chris Maes and Anton Antonov, Wolfram Demonstrations Project.
  • Tabulated weights and abscissae with Mathematica source code, high precision (16 and 256 decimal places) Legendre-Gaussian quadrature weights and abscissas, for n=2 through n=64, with Mathematica source code.
  • Mathematica source code distributed under the GNU LGPL for abscissas and weights generation for arbitrary weighting functions W(x), integration domains and precisions.