Coefficient Inequalities of Functions Associated with Hyperbolic Domains

Abstract

In this work, our focus is to study the Fekete-Szegö functional in a different and innovative manner, and to do this we find its upper bound for certain analytic functions which give hyperbolic regions as image domain. The upper bounds obtained in this paper give refinement of already known results. Moreover, we extend our work by calculating similar problems for the inverse functions of these certain analytic functions for the sake of completeness.

Keywords

• analytic functions
• starlike functions
• convex functions
• Fekete-Szegö inequality