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Journal of Inequalities and Applications
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On the Superstability of the Pexider Type Trigonometric Functional Equation

Journal of Inequalities and Applications volume 2010, Article number: 897123 (2010) Cite this article

Abstract

We will investigate the superstability of the (hyperbolic) trigonometric functional equation from the following functional equations: and, which can be considered the mixed functional equations of the sine function and cosine function, the hyperbolic sine function and hyperbolic cosine function, and the exponential functions, respectively.

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  1. Department of Mathematics, Kangnam University, Yongin, Gyeonggi, 446-702, South Korea

    GwangHui Kim

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  1. GwangHui Kim
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Correspondence to GwangHui Kim.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Kim, G. On the Superstability of the Pexider Type Trigonometric Functional Equation. J Inequal Appl 2010, 897123 (2010). https://doi.org/10.1155/2010/897123

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  • DOI: https://doi.org/10.1155/2010/897123

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