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Abstract
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International Journal of Mathematics and Mathematical Sciences 
Volume 24 (2000), Issue 9, Pages 577-581
doi:10.1155/S0161171200005111

On the Fekete-Szegö problem

B. A. Frasin and Maslina Darus

School of Mathematical Sciences, Faculty of Sciences and Technology, University Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia

Received 9 May 2000

Abstract

Let f(z)=z+a2z2+a3z3+⋯ be an analytic function in the open unit disk. A sharp upper bound is obtained for |a3−μa22| by using the classes of strongly starlike functions of order β and type α when μ≥1.