On stability and nonstability of systems of functional equations

Published in: Quaestiones Mathematicae
Volume 44 , issue 4 , 2021 , pages: 557–567

DOI: 10.2989/16073606.2020.1728415

Author(s): Madjid Eshaghi , Iran , Bahman Hayati , Iran , Mahdie Kamyar , Iran , Hamid Khodaei , Iran

Keywords: 39B82 , 39B52 , 14L05 , 39B82 , 39B52 , 14L05

In this paper, we consider the stability and nonstability results for the following system of functional equations

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