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//Example 2_17
//find convolution of two sequences
clc;
n=-8:1/1000:8;
for i=1:length(n)
if n(i)<-5 then
x(i)=0;
else
x(i)=(1/2)^n(i);
end
if n(i)<3 then
h(i)=0;
else
h(i)=(1/3)^n(i);
end
end
y=convol(x,h);
figure
plot2d3(n,h);
title('Impulse responce');
figure
plot2d3(n,x);
title('Input signal');
figure
n1=-16:1/1000:16
plot2d3(n1,y);
title('Output signal');
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