Journals / Communications Faculty of Sciences University of Ankara Series A1: Mathematics and Statistics / 2017 / Cilt: 66 - Sayı: 1
CERTAIN SUBCLASSES OF ANALYTIC AND BI-UNIVALENT FUNCTIONS INVOLVING THE q-DERIVATIVE OPERATOR
- Journal
- Communications Faculty of Sciences University of Ankara Series A1: Mathematics and Statistics
- Pages
- 108–114
- DOI
- —
Abstract
In this paper, we introduce and investigate two new subclasses H q;and H q( ) of analytic and bi-univalent functions in the open unit disk U: For functions belonging to these classes, we obtain estimates on the Örst two Taylor-Maclaurin coe¢ cients ja2j and ja3j :