Entisar ElYagubi, and Maslina Darus, (2014) On feketeszegö problems for a subclass of analytic functions. Journal of Quality Measurement and Analysis, 10 (1). pp. 1726. ISSN 18235670

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Abstract
The aim of this paper is to determine the FeketeSzegö inequalities for a normalised analytic function f (z) defined on the open unit disc for which z(Dλ1,λ2 ,δ m,b f (z))′ / (Dλ1,λ2 ,δ m,b f (z)),δ ,m,b ∈N0 ,λ2 ≥ λ1 ≥ 0 lies in a region starlike with respect to 1 and it is symmetric with respect to the real axis by using the operator Dλ1,λ2 ,δ m,b f (z) given recently by the authors. As a special case of this result, FeketeSzegö inequality for a class of functions defined by fractional derivatives is also obtained.
Item Type:  Article 

Keywords:  analytic function; starlike function; subordination; FeketeSzegö inequality; derivative operator 
Journal:  Journal of Quality Measurement and Analysis 
ID Code:  8291 
Deposited By:  ms aida  
Deposited On:  02 Mar 2015 10:16 
Last Modified:  14 Dec 2016 06:46 
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