Title
Numerical evaluation of Goursat's infinite integral
Abstract
The infinite integral converges but is hard to evaluate because the integrand f(x) = x/(1 + x 6sin2 x) is a non-convergent and unbounded function, indeed f(kπ) = kπ→ ∞ (k→ ∞). We present an efficient method to evaluate the above integral in high accuracy and actually obtain an approximate value in up to 73 significant digits on an octuple precision system in C++.
Year
DOI
Venue
2009
10.1007/s11075-009-9265-4
Numerical Algorithms
Keywords
Field
DocType
Infinite integral,Unbounded integrand,Contour integral,Residues,Numerical evaluation,High accuracy,Octuple precision,65D30
Mathematical optimization,Mathematical analysis,Methods of contour integration,Mathematics
Journal
Volume
Issue
ISSN
52
2
1017-1398
Citations 
PageRank 
References 
2
0.68
3
Authors
4
Name
Order
Citations
PageRank
Yasuyo Hatano131.46
Ichizo Ninomiya241.49
Hiroshi Sugiura341.87
Takemitsu Hasegawa4167.38