Fekete-Szegö Inequality for a New Class and Its Certain Subclasses of Analytic Functions

We introduce some classes of analytic functions, its subclasses and obtain sharp upper bounds of the functional |a_3-µa_2^2 | for the analytic function f(z)= z+ ∑_(n=2)^∞=2^a_n z^n,|z| 1 belonging to these classes and subclasses.