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

ON THE STABILITY OF THE COSINE TYPE FUNCTIONAL EQUATION

On the Stability of the Cosine Type Functional Equation

한국수학교육학회지시리즈B:순수및응용수학 / Journal of the Korean Society of Mathematical Education Series B: Theoretical Mathematics and Pedagogical Mathematics, (P)3059-0604; (E)3059-1309
2007, v.14 no.1, pp.7-14
Kim, Gwang-Hui (DEPARTMENT OF MATHEMATICS, KANGNAM UNIVERSITY)

Abstract

The aim of this paper is to study the superstability problem of the cosine type functional equation f(x+y)+f(x+${\sigma}y$)=2g(x)g(y).

keywords
stability, superstability, functional equation, sine functional equation

한국수학교육학회지시리즈B:순수및응용수학