%
% Bode diagram for Figures 12.13 to 12.18
%
% Figure 12.13
figure (1) 
num=-0.9
den=1
bode(num,den) % MUST BE PLOTTED USING MATLAB 6
grid
print -deps fig12_13.eps
% Figure 12.14
figure (2)
num=1
den=[1 0]
bode(num,den)
grid
print -deps fig12_14.eps
% Figure 12.15
figure (3)
num=[1 0]
den=1
bode(num,den)
grid
print -deps fig12_15.eps
% Figure 12.16
figure (4)
num=1
den=[1 1]
bode(num,den)
hold
bode(1,[1 0],{1,10})
grid
print -deps fig12_16.eps
% Figure 12.17
figure (5)
num=[1 1]
den=1
bode(num,den)
hold
bode([1 0],1,{1,10})
grid
print -deps fig12_17.eps
% Figure 12.18
figure (6)
num=1
den=[1 1 1]
bode(num,den)
grid
print -deps fig12_18.eps