Theoretical and Natural Science

- The Open Access Proceedings Series for Conferences


Theoretical and Natural Science

Vol. 10, 17 November 2023


Open Access | Article

Lobachevsky's formula and its applications to several definite integrals

Yu-Hsiang Wang * 1
1 Shanghai Taiwanese Children's School

* Author to whom correspondence should be addressed.

Theoretical and Natural Science, Vol. 10, 101-106
Published 17 November 2023. © 2023 The Author(s). Published by EWA Publishing
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Citation Yu-Hsiang Wang. Lobachevsky's formula and its applications to several definite integrals. TNS (2023) Vol. 10: 101-106. DOI: 10.54254/2753-8818/10/20230324.

Abstract

The definite integral is a fundamental concept in calculus that has many applications in various fields such as physics, engineering, and economics. However, integration can be difficult and requires a variety of skills such as substitutions and partial integration. In this paper, Lobachevsky’s formula is explored, which provides a new way to evaluate definite integrals. It should be noted that Lobachevsky’s formula can only be applied in specific cases where the integrand is even and π-periodic. However, it is demonstrated to be an effective method in these cases. In this paper, the proof of the theorem is given, and a variety of examples are solved by virtue of this method. Hence, this paper may serve as a reference for relevant research in the field of calculus and provide insights into the applications of Lobachevsky’s formula.

Keywords

Lobachevsky's formula, definite integral, improper integral, calculus

References

1. Stein E M and Rami S. (2009). Real Analysis. Princeton University Press.

2. Conway J. B. (1995). Functions of one complex variable. Springer-Verlag.

3. Luxemburg W. A. J. (1971). Arzela’s Dominated Convergence Theorem for the Riemann Integral. The American Mathematical Monthly, 78(9): 970–979.

4. Rudin W. (2018). Principles of mathematical analysis. McGraw-Hill Education.

5. Talvila E. (2001). Necessary and Sufficient Conditions for Differentiating under the Integral Sign. The American Mathematical Monthly, 108(6): 544–548.

6. Brown J. W. and Churchill, R. V. (2004). Complex variables and applications. McGraw-Hill Higher Education.

7. Jolany H. (2018). An extension of the Lobachevsky formula. Elemente Der Mathematik, 73(3): 89–94.

8. Folland G. B. (1999). Real analysis : modern techniques and their applications. John Wiley And Sons.

9. GradshteĭnI. S., Ryzhik I. M., Zwillinger D., and Moll V. H. (2014). Table of integrals, series, and products. Academic Press.

10. Abramowitz M. and Stegun I. A. (2012). Handbook of Mathematical Functions. Courier Corporation.

Data Availability

The datasets used and/or analyzed during the current study will be available from the authors upon reasonable request.

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Volume Title
Proceedings of the 2023 International Conference on Mathematical Physics and Computational Simulation
ISBN (Print)
978-1-83558-131-5
ISBN (Online)
978-1-83558-132-2
Published Date
17 November 2023
Series
Theoretical and Natural Science
ISSN (Print)
2753-8818
ISSN (Online)
2753-8826
DOI
10.54254/2753-8818/10/20230324
Copyright
17 November 2023
Open Access
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Copyright © 2023 EWA Publishing. Unless Otherwise Stated