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  • P-ISSN3059-0604
  • E-ISSN3059-1309
  • KCI

On the Hyers-Ulam-Rassias Stability of an Additive-cubic-quartic Functional Equation

Journal of the Korean Society of Mathematical Education Series B: Theoretical Mathematics and Pedagogical Mathematics / Journal of the Korean Society of Mathematical Education Series B: Theoretical Mathematics and Pedagogical Mathematics, (P)3059-0604; (E)3059-1309
2019, v.26 no.4, pp.247-254
https://doi.org/10.7468/jksmeb.2019.26.4.247
Lee, Yang-Hi

Abstract

In this paper, we investigate Hyers-Ulam-Rassias stability of the functional equation f(x + ky) - k2f(x + y) + 2(k2 - 1)f(x) - k2f(x - y) + f(x - ky) - k2(k2 - 1)(f(y) + f(-y)) = 0, where k is a fixed real number with |k| ≠ 0, 1.

keywords
stability of a functional equation, additive-cubic-quartic functional equation, additive-cubic-quartic mapping

Journal of the Korean Society of Mathematical Education Series B: Theoretical Mathematics and Pedagogical Mathematics