• ZERO-FREE REGIONS FOR POLYNOMIALS WITH RESTRICTED COEFFICIENTS

M. H. Gulzar*

Abstract


According to a famous result of Enestrom and Kakeya, if is a polynomial of degree n such that , then P(z) does not vanish in In this paper we relax the hypothesis of this result in several ways and obtain zero-free regions for polynomials with restricted coefficients and thereby present some interesting generalizations and extensions of the Enestrom-Kakeya Theorem.

Keywords


Zero-free regions, Bounds, Polynomials.

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