%
% Figure 12.19
%
clg
num=1
den1=[1 2 1]
den2=[1 1 1]
den3=[1 0.2 1]
den4=[1 0.02 1]
bode(num,den1)
hold
bode(num,den2)
bode(num,den3)
bode(num,den4)
grid
print -deps fig12_19.eps