Let P be a complex polynomial of the form P(z)=(λz-a)m Πn-mj=1(2-zj),where|zj|≥ 1,1 ≤ j ≤ n-m.The aim of this paper is to obtain generalisation of a result due to Zargar and Manzoor and a result due to Mir,Nazir and Wani.We shall also obtain an interesting bound which contains the zeros of the second derivative of P(z).
boundcoefficientpolynomialzeros
Mahnaz Shafi CHISHTI、Vipin Kumar TYAGI、Mohammad Ibrahim MIR
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School of Basic and Applied Sciences,Shobhit Institute of Engineering and Technology(Deemed to be University),Meerut,U.P.250110,India
Department of Mathematics,University of Kashmir,South Campus,Anantnag,Jammu and Kashmir,192101,India
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