Hyperstability of a Cauchy-Jensen Type Functional Equation
Muaadh Almahalebi & Samir Kabbaj · Advances in Research · 2014
In this paper, we establish some hyperstability results concerning the Cauchy - Jensen functional equation $$ f\left(\frac{x+y}{2}\right)+f\left(\frac{x-y}{2}\right)=f(x) $$ in Banach spaces.
Open access
Research Article
10.9734/AIR/2014/12847