MT Devi,
K Krishnadas, N Reingachan… - The Journal of …, 2022 - Springer
Let p (z) be a polynomial of degree n and α be any real or complex number, the polar
derivative of p (z), denoted by D α p (z), is defined as D α p (z)= np (z)+(α-z) p′(z). Let p (z) …