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Second Hankel Determinant for Certain Classes of Analytic FunctionsDOI: 10.9756/bijdm.1368 Keywords: Coefficient Bounds , Convex Functions , Hankel Determinant , Starlike Functions Abstract: Denote S to be the class of functions which are analytic, normalized and univalent in the open unit disc D = {z: |z| < 1}. The important sub classes of S are the class of starlike and convex functions, which we denote by S* and C. This paper focuses on attaining the sharp upper bounds for the functional.,
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