The q-analogue of Sigmoid function in the strongly starlike functions

Let A be the class of analytic and regular function in the open unite disc D = fz; jzj < ۱g. In the present investigation, by using the modi ed q-sigmoid functiona class of strongly starlike function are de ned. Furthermore, we pointed out the initial coe cient and Fekete-Szego inequality for a subclass of strongly functions related tosigmoid functions.

کلیدواژه ها:

Strongly starlike functions ، q derivative ، modi ed q-Sigmoid function ، coef- cient bound ، Fekete-Szego inequality.