Uniform approximations of the first symmetric elliptic integral in terms of elementary functions

被引:0
|
作者
Bujanda, Blanca [1 ,2 ]
Lopez, Jose L. [1 ,2 ]
Pagola, Pedro J. [1 ,2 ]
Palacios, Pablo [1 ,2 ]
机构
[1] Univ Publ Navarra, Dept Estadist Informat & Matemat, Pamplona, Spain
[2] Univ Publ Navarra, INAMAT2, Pamplona, Spain
关键词
Symmetric standard elliptic integrals; Convergent expansions; Uniform expansions; Error bounds; ASYMPTOTIC EXPANSIONS; CONVERGENT EXPANSIONS; TABLE; INEQUALITIES; BOUNDS;
D O I
10.1007/s13398-021-01151-y
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We consider the standard symmetric elliptic integral R-F (x, y, z) for complex x, y, z. We derive convergent expansions of RF (x, y, z) in terms of elementary functions that hold uniformly for one of the three variables x, y or z in closed subsets (possibly unbounded) of C\(-infinity, 0]. The expansions are accompanied by error bounds. The accuracy of the expansions and their uniform features are illustrated by means of some numerical examples.
引用
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页数:17
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