t=(0:0.01:10);
%
nG1=(2,3,6,10,24);
dG1=(1,8,20,30,12);G1=tf(nG1,dG1);
nG2=(2);
den1=[2,1];den2=[1,3];den3=[2,3,1];
dG2=conv(conv(den1,den2),den3);G2=tf(nG2,nG2);
nG3=[1];
den1'=[1,-1];den2'=[1,4];den3'=[2,-3,1];
dG3=conv(conv(den1',den2'),den3');G3=(nG3,dG3);
%
[y1,T]=inpulse(G1,t);...