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Superstability of Some Pexider-Type Functional Equation


We will investigate the superstability of the sine functional equation from the following Pexider-type functional equation (), which can be considered the mixed functional equation of the sine and cosine functions, the mixed functional equation of the hyperbolic sine and hyperbolic cosine functions, and the exponential-type functional equations.

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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 (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Kim, G. Superstability of Some Pexider-Type Functional Equation. J Inequal Appl 2010, 985348 (2010).

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