Stability of a mixed type cubic–quartic functional equation in non-Archimedean spaces

In this paper, we prove the Hyers–Ulam–Rassias stability of the mixed type cubic–quartic functional equation f(x+2y)+f(x−2y)=4(f(x+y)+f(x−y))−24f(y)−6f(x)+3f(2y)f(x+2y)+f(x−2y)=4(f(x+y)+f(x−y))−24f(y)−6f(x)+3f(2y) in non-Archimedean normed spaces.