On a functional equation of trigonometric type

Soon-Mo Jung, Michael Th. Rassias and Cristinel Mortici

Applied Mathematics and Computation, 2015, vol. 252, issue C, 294-303

Abstract: In this paper, we study the functional equation, f(x+y)-f(x)f(y)=dsinxsiny. Some generalizations of the above functional equation are also considered.

Keywords: Hyers–Ulam stability; Functional equation; Trigonometric type functional equation; Functional inequality; Banach spaces (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:apmaco:v:252:y:2015:i:c:p:294-303

DOI: 10.1016/j.amc.2014.12.019

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