%
% Example 4.20 and Figure 4.2
%
num=[1 3]
den=[1 3 2]
figure (1)
impulse(num,den)
print -deps fig4_2.eps
t=0:0.1:3
y=impulse(num,den,t)
figure (2)
plot(t,y)
xlabel('time')
ylabel('impulse response')