Estimates for initial coefficients of certain Bi-univalent functions

vibha Madaan, Ajay Kumar, V. Ravichandran


Estimates are obtained for the initial coefficients of a normalized analytic function $f$ in the unit disk $\mathbb{D}$ such that $f$ and the analytic extension of $f^{-1}$ to $\mathbb{D}$ belong to certain subclasses of univalent functions. The bounds obtained improve some existing known bounds. 


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