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arXiv · 0812.5017

On the stability of generalized mixed type quadratic and quartic functional equation in quasi-Banach spaces

S. Abbaszadeh·M. Eshaghi Gordji
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Abstract

In this paper, we establish the general solution of the functional equation $$f(nx+y)+f(nx-y)=n^2f(x+y)+n^2f(x-y)+2(f(nx)-n^2f(x))-2(n^2-1)f(y)\eqno {0 cm}$$for fixed integers $n$ with $n\neq0,\pm1$ and investigate the generalized Hyers-Ulam-Rassias stability of this equation in quasi-Banach spaces.

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S. Abbaszadeh, M. Eshaghi Gordji. 2008-12-30. On the stability of generalized mixed type quadratic and quartic functional equation in quasi-Banach spaces. https://arxiv.org/abs/0812.5017

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