On zero-free regions for the derivative of a polynomial

Abstract

LetP n denote the set of all polynomials of the form

On Zero Free Regions for Derivatives of a Polynomial

“…n(n−1) . Zarger and Manzoor [4] also obtained the following result for the polynomial p (m) (z), m ≥ 1.…”

“…Zarger and Manzoor [4] have extended Theorem 1.1 to the second derivative p ′′ (z) of a polynomial of the form…”