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In this paper, we prove generalized Hyres--Ulam--Rassias stability of themixed type additive, quadratic and cubic functional equation$$f(x+ky)+f(x-ky)=k^2f(x+y)+k^2f(x-y)+2(1-k^2)f(x)$$ for fixed integers $k$with $k\neq0,\pm1$ in non-Archimedean spaces.

Stability of generalized mixed type additive-quadratic-cubic functional equation in non-Archimedean spaces