Application of Ruscheweyh Derivative to Univalent Functions with Negative Coefficients

Abstract

The systematic investigation of a new class of analytic functions, which is defined in terms of Ruscheweyh derivative, is presented. Apart from coefficient bounds, esults like distortion property, closure property and radius of starlikeness of this class of functions is obtained. Keywords: Ruscheweyh derivative; distortion theorem; coefficient bounds.