ON Lambda PSEUDO BI-STARLIKE FUNCTIONS RELATED (p; q)-LUCAS POLYNOMIAL

Abstract

In this paper we introduce a new class L(; x) of Lambda-pseudo bi-starlike functions through the (p; q)-Lucas polynomials and determine the bounds for |a2| and |a3| where a2, a3 are the initial Taylor coecients of f 2 L(; x): Furthermore, we estimate the Fekete-Szego functional for f 2 L(; x): We pointed out several new or known consequences of our result.