1 #!/usr/bin/python

     2 ## 4.10

     3 

     4 from respol import respol

     5 

     6 import scipy as sp

     7 from scipy import signal

     8 

     9 num = sp.array([3, -5/6.])

    10 den = signal.convolve([1,-1/4.],[1,-1/3.])

    11 

    12 res, pol, coeffs = signal.residuez(num,den)