Coefficient Estimates on Janowski Functions

Abstract

In the present paper, a new subclass of bi – pseudo starlike and convex functions related with strongly Janowski functions in the open unit disc is introduced. For functions belonging to the class, estimates on the first two Taylor – Maclaurin coefficients are obtained. Also, to derive new results and known results as special cases of investigation.

2010 Mathematical Subject Classification: 30C45, 30C50.