Hyers-Ulam stability; additive (ρ1, ρ2)-functional inequality; fixed point method; direct method; Banach space
Journal of Computational Analysis and Applications, v. 27, no. 2, Page. 367-379
In this paper, we introduce and solve the following additive (ρ where ρ1 and ρ2 are fixed complex numbers with |ρ1| > 1. Using the fixed point method and the direct method, we prove the Hyers-Ulam stability of the additive (ρ1, ρ2)-functional inequalities (0.1) and (0.2) in complex Banach spaces.