Trigonometric integrals evaluated in terms of Riemann zeta and Dirichlet beta functions

Author:

Li Jing1,Chu Wenchang2

Affiliation:

1. School of Mathematics and Statistics, Zhoukou Normal University , 466001 Zhoukou , China

2. Department of Mathematics and Statistics , Via Dalmazio Birago 9E , 73100 Lecce , Italy

Abstract

Abstract Three classes of trigonometric integrals involving an integer parameter are evaluated by the contour integration and the residue theorem. The resulting formulae are expressed in terms of Riemann zeta function and Dirichlet beta function. Several remarkable integral identities are presented.

Publisher

Walter de Gruyter GmbH

Reference20 articles.

1. G. Boros and V. H. Moll, Irresistible Integrals, Cambridge University Press, Cambridge, 2004

2. C. Li and W. Chu, Improper integrals involving powers of inverse trigonometric and hyperbolic functions, Mathematics 2022 (2022), no. 10, 2980, DOI: https://doi.org/10.3390/math10162980.

3. C. I. Všlean, (Almost) Impossible Integrals, Sums, and Series, Springer Nature AG, Switzerland, 2019.

4. A. Jeffrey and H.-H. Dai, Handbook of Mathematical Formulas and Integrals, 4th edition, Academic Press, London, UK, 2008.

5. K. N. Boyadzhiev, Special Techniques for Solving Integrals: Examples and Problems, World Scientific Publishing Co. Pte. Ltd., Singapore, 2022.

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