Sahand Communications in Mathematical Analysis (Nov 2020)

On Certain Generalized Bazilevic type Functions Associated with Conic Regions

  • Khalida Inayat Noor,
  • Shujaat Ali Shah

DOI
https://doi.org/10.22130/scma.2020.118014.720
Journal volume & issue
Vol. 17, no. 4
pp. 13 – 23

Abstract

Read online

Let $f$ and $g$ be analytic in the open unit disc and, for $\alpha ,$ $\beta \geq 0$, let\begin{align*}J\left( \alpha ,\beta ,f,g\right) & =\frac{zf^{\prime }(z)}{f^{1-\alpha}(z)g^{\alpha }(z)}+\beta \left( 1+\frac{zf^{\prime \prime }(z)}{f^{\prime}(z)}\right) -\beta \left( 1-\alpha \right) \frac{zf^{\prime }(z)}{f(z)} \\& \quad -\alpha \beta \frac{zg^{\prime }(z)}{g(z)}\text{.}\end{align*}The main aim of this paper is to study the class of analytic functions which map $J\left( \alpha ,\beta ,f,g\right) $ onto conic regions. Several interesting problems such as arc length, inclusion relationship, rate of growth of coefficient and Growth rate of Hankel determinant will be discussed.

Keywords