The Fekete-Szegö problem for a general class of bi-univalent functions satisfying subordinate conditions

Abstract

In this work, we obtain the Fekete-Szegö inequalities for the class $P_{Sigma }left( lambda ,phi right) $ of bi-univalent functions. The results presented in this paper improve the recent work of Prema and Keerthi [11].

Keywords

• Bi-univalent functions
• Convex functions with respect to symmetric points
• Subordination
• Fekete-Szegö inequality