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Some inequalities concerning polar derivative of a polynomial. Addendum

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Abstract

Let P(z) be s polynomial of degree n having all its zeros in |z| ≤ k, k ≥ 1. In this paper, we shall generalize a result of Aziz and Rather [2] which in turn provides an improvement of a recent result of Dewan et al. [4]. Also a refinement of a result of Shah [10] for the polar derivative of a polynomial has been obtained by using the location of the zeros of P(z).

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Authors and Affiliations

  1. Department of Mathematics, University of Kashmir, Srinagar, 190006, India

    Abdullah Mir

  2. Govt. Hr. Sec. Institute, Kurhama, Ganderbal, 191201, India

    Sajad Amin Baba

Authors
  1. Abdullah Mir
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  2. Sajad Amin Baba
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Correspondence to Abdullah Mir.

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Submitted by F.G. Avkhadiev

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Mir, A., Baba, S.A. Some inequalities concerning polar derivative of a polynomial. Addendum. Lobachevskii J Math 32, 231–237 (2011). https://doi.org/10.1134/S1995080211030103

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  • DOI: https://doi.org/10.1134/S1995080211030103

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