% Aufgabe 4_26

sys1=tf([5],[2 1],0.01);
sys2=tf([1 3],[1 1/3],0.01);sys2.outputd=1;
sys3=tf([2/3 -1/2 0],[1 1/5 -2/7],0.01);

for n=1:3
    figure(n);subplot(1,2,1);pzmap(eval(['sys',num2str(n)]));subplot(1,2,2);step(eval(['sys',num2str(n)]));
    h_inf(n)=dcgain(eval(['sys',num2str(n)]));
end;