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20122021
most citedBounds of the Derivative of Some Classes of Rational Functions

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math.CV2018

Some Inequalities for the Polar Derivative of Some Classes of Polynomials

Nuttapong Arunrat, Keaitsuda Maneeruk Nakprasit

In this paper, we investigate an upper bound of the polar derivative of a polynomial of degree $$p(z)=(z-z_m)^{t_m} (z-z_{m-1})^{t_{m-1}}\cdots (z-z_0)^{t_0}(a_0+\sum\limits_{ν…