Chebyshev approximation of $x^m (-\log x)^l$ in the interval $0\le x \le 1$
Classical Analysis and ODEs
2024-08-28 v1
Abstract
The series expansion of in terms of the shifted Chebyshev Polynomials requires evaluation of the integral family . We demonstrate that these can be reduced by partial integration to sums over integrals with exponent which have known representations as finite sums over polygamma functions.
Keywords
Cite
@article{arxiv.2408.15212,
title = {Chebyshev approximation of $x^m (-\log x)^l$ in the interval $0\le x \le 1$},
author = {Richard J. Mathar},
journal= {arXiv preprint arXiv:2408.15212},
year = {2024}
}
Comments
9 pages, no figures. Integrals table in the anc directory