Certain subclasses of bi-univalent functions related to k-Fibonacci numbers

Abstract

In this paper, we introduce and investigate new subclasses of bi-univalent

functions related to k-Fibonacci numbers. Furthermore, we nd estimates of first two

coecients of functions in these classes. Also, we obtain the Fekete-Szego inequalities

for these function classes.

Keywords

• Analytic functions,bi-univalent,k-fibonacci numbers,starlike function,convex function

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