Inverse Z-transform - MATLAB iztrans
www.mathworks.com › help › symbolicCompute the inverse Z-transform of 1/ (a*z). By default, the independent and transformation variables are z and n , respectively. syms z a F = 1/ (a*z); iztrans (F) ans = kroneckerDelta (n - 1, 0)/a. Specify the transformation variable as m. If you specify only one variable, that variable is the transformation variable.