%
% Example 6.17
%
k=0:1:2
f1=[1 2]
f2=[-1 3]
f=conv(f1,f2)
figure (1)
plot(k,f,'*')
K1=2
K2=3
kk=0:1:K1+K2
f1=[-2 1 3]
f2=[2 3 -1 1]
ff=conv(f1,f2)
figure (2)
plot(kk,ff,'*')