In this paper, certain new results concerning the maximum modulus of the polar derivative and the generalized polar derivative of a polynomial with restricted zeros are obtained. These estimates strengthen some well known inequalities for polynomial due to Tur n, Rather and Dar, Rather, Ali, Shafi and Dar  and others.

In this paper certain polynomial inequalities for the polar derivative and the generalized polar derivative with restricted zeros are given, which generalize and refine some well-known polynomial inequalities due to Lax, Tura ́n, AlSaeedi, Rather, Ali, Shafi, and Dar and others.

In this paper certain polynomial inequalities with restricted zeros are given, which generalize and refine some well-known polynomial inequalities due to Ankeny and Rivlin, Dewan, Singh and Mir, Mir, Wani and Hussain and others.