Let p (z) be a polynomial of degree at most n, let Da p (z) = np (z) + (a - z) pl (z) , denote
the polar derivative of the polynomial p (z) with respect to a. In this paper, we consider
an operator B, which carries a polynomial Da p (z) in to
[ ()]: () ()
!
( )
B D p z D p z ,
mz
Dp z
mz Dp z
2 2 2
2
a = m a + m + m
a
0 1 la 2 b l ll
where 0 # m # n - 1, m0,m1 and m2 are such that all the zeros
... [Show full abstract] of
u (z)
m
z
m
1 2
= m + m + m 2
1 2 0 z c m c m
lie in half plane
Re z ,
m
4
#
and obtain compact generalization of some well known polynomial inequalities.