The following MATLAB code generates the plot of the unit-sample response of the filter characterized by System Function: H(z) = 2-142-2 = ; [z]> 1/01 clear all close all num=[0 1 1]; den= [1 1/12 -1/12]; hn-dimpulse (num, den) ; n=0:1: length (hn)-1; stem(nhn) The following MATLAB code generates the plot of the unit-sample response of the filter characterized by System Function: H(z)=1+121z1121z2z1+z2;z>31.