Inequalities for the Polar Derivative of a Polynomial

References

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[4] K. K. Dewan, N. Singh and A. Mir, “Growth of Polyno-mials not Vanishing inside a Circle,” International Journal of Mathematical Analysis, Vol. 1, No. 11, 2007, pp. 529-538.

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doi:10.1090/S0002-9939-1973-0325932-8

[6] P. D. Lax, “Proof of a Conjecture of P. Erd?s on the Derivative of a Polynomial,” American Mathematical Society, Vol. 50, No. 8, 1994, pp. 509-513.

[7] M. A. Malik, “On the Derivative of a Polynomial,” Journal of the London Mathematical Society, Vol. 2, No. 1, 1969, pp. 57-60. doi:10.1112/jlms/s2-1.1.57

[8] Polya and G. Szeg?, “Aus-gaben und Lehratze ous der Analysis,” Springer-Verlag, Berlin, 1995.

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[10] P. Turán, “über die Ableitung von Polynomen,” Compositio Mathematica, Vol. 7, 1939, pp. 89-95.