R. Ali, Virendra Kumar, V. Ravichandran, Shanmugam Sivaprasad Kumar
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Radius of Starlikeness for Analytic Functions with Fixed Second Coefficient
Sharp radius constants for certain classes of normalized analytic functions with fixed second coefficient, to be in the classes of starlike functions of positive order, parabolic starlike functions, and Sokó l-Stankiewicz starlike functions are obtained. Our results extend several earlier works.