请输入您要查询的字词:

 

单词 Legendre-Gauss Quadrature
释义

Legendre-Gauss Quadrature

Also called ``the'' Gaussian Quadrature or Legendre Quadrature. A Gaussian Quadrature over theinterval with Weighting Function . The Abscissas for quadrature order aregiven by the roots of the Legendre Polynomials , which occur symmetrically about 0.The weights are

(1)

where is the Coefficient of in . For Legendre Polynomials,
(2)

so
 
 (3)

Additionally,
(4)

so
(5)

Using the Recurrence Relation


(6)

gives
(7)

The error term is
(8)

Beyer (1987) gives a table of Abscissas and weights up to , and Chandrasekhar (1960) up to for Even.

2± 0.577351.000000
300.888889
 ± 0.7745970.555556
4± 0.3399810.652145
 ± 0.8611360.347855
500.568889
 ± 0.5384690.478629
 ± 0.906180.236927

The Abscissas and weights can be computed analytically for small .

21
30
 
4
 

References

Beyer, W. H. CRC Standard Mathematical Tables, 28th ed. Boca Raton, FL: CRC Press, pp. 462-463, 1987.

Chandrasekhar, S. Radiative Transfer. New York: Dover, pp. 56-62, 1960.

Hildebrand, F. B. Introduction to Numerical Analysis. New York: McGraw-Hill, pp. 323-325, 1956.


随便看

 

数学辞典收录了8975条数学词条,基本涵盖了常用数学知识及数学英语单词词组的翻译及用法,是数学学习的有利工具。

 

Copyright © 2000-2023 Newdu.com.com All Rights Reserved
更新时间:2025/4/4 16:13:38