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We introduce and investigate two new subclasses Σδ,μn,α,λ and Σδ,μn,β,λ of analytic and bi-univalent functions in the open unit disk . For functions belonging to these classes, we obtain estimates on the first two Taylor-Maclaurin coefficients a2 and a3.

Coefficient Estimates for New Subclasses of Analytic and Bi-Univalent Functions Defined by Al-Oboudi Differential Operator