DOI: 10.2298/fil2313125k ISSN: 0354-5180
Radius of Ma-Minda starlikeness of certain normalised analytic functions
Priya Krishnan, V. Ravichandran, P. Saikrishnan- General Mathematics
We find the radius of Ma-Minda starlikeness of normalised analytic functions of the form 1(z) = z(f?(z))?, ? > 0 where f is in the classCV[A, B] of Janowski convex functions and 1(z) = z(zf?(z)/ f (z))?, ? > 0 where f is in the class CV? defined. As particular cases, we obtain criteria for these functions to belong to certain Ma-Minda classes.