Certain properties for analytic functions defined by a generalised derivative operator

In this paper, some important properties of analytic functions with negative coefficients defined by a generalised derivative operator are investigated. The properties include the necessary and sufficient conditions, radius of starlikeness, convexity and close-to-convexity.

Bibliografske podrobnosti
Main Authors: Aisha Ahmed Amer, Maslina Darus
Format: Article
Jezik:English
Izdano: Penerbit Universiti Kebangsaan Malaysia 2012
Online dostop:http://journalarticle.ukm.my/5922/1/jqma-8-2-makalah4.pdf
Opis
Izvleček:In this paper, some important properties of analytic functions with negative coefficients defined by a generalised derivative operator are investigated. The properties include the necessary and sufficient conditions, radius of starlikeness, convexity and close-to-convexity.