Stability Of Mixed Additive - Quadratic - Cubic Function Equations

In this paper, we investigated the HUR stability of a mixed functional equation deriving from additive,quadratic and cubic mappingsf (2x+y)+f(2x-y)=2f(2x)+2f(x+y)+2f(x-y)-4f(x)-f(y)-f(x-y) in different spaces using direct method and fixed point method.In first chapter, we investigated the HUR stability of a mixed functional equation deriving from additive,quadratic and cubic mappings in Felbin’s type fuzzy normed linear spaces using direct method and fixed point method.In second chapter, we investigated the HUR stability of a mixed functional equation deriving from additive,quadratic and cubic mappings in non-Archimedean spaces using direct method and fixed point method.