Radius Constants for Analytic Functions with Fixed Second Coefficient

Rosihan M. Ali, Moradi Nargesi Mahnaz, V. Ravichandran

Let $f(z)=z+{\sum }_{n=2}^{\infty }{a}_n{z}^n$ be analytic in the unit disk with second coefficient $a_2$ satisfying $|a_2|=2b$, $0\le b\le 1$. Sharp radius of Janowski starlikeness and o…