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Stability of a functional equation deriving from quadratic and additive functions in quasi-Banach spaces |
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| Authors: | Abbas Najati |
| Affiliation: | Faculty of Science, Department of Mathematics, University of Mohaghegh Ardebili, Ardebil, Iran |
| Abstract: | In this paper we establish the general solution of the functional equation f(2x+y)+f(2x−y)=f(x+y)+f(x−y)+2f(2x)−2f(x) |
| Keywords: | Hyers-Ulam-Rassias stability Quadratic function Additive function Quasi-Banach space p-Banach space |
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