How do i write a polynomial and take the derivative?

I want to take the derivative of a polynomial, but Im not sure how to write the polynomial in the script T(A)=A^3 - A^2 - A -1. For the derivative do i use Polyder?

Answer 1

[Stephan]

>> T = [1 -1 -1 -1]

T =

     1    -1    -1    -1

>> dT = polyder(T)

dT =

     3    -2    -1