n-dimensional quintic and sextic functional equations and their stabilities in Felbin type spaces

In this paper, we derive general solution of new n-dimensional quintic and sextic functional equations and investigate the Hyers-Ulam stability, Hyers-Ulam-Rassias stability and generalized Hyers-Ulam-Rassias stability for quintic and sextic functional equations in Felbin type fuzzy normed linear spaces. Also, we give the counter examples for the Hyers-Ulam-Rassias stability of quintic and sextic functional equations for some cases.