Question

急求matlab求离散序列卷积的程序，题目如下

Answer 1

u=@(t) t>=0;
f1=@(t) exp(-2*t).*u(t);
f2=@(t) u(t)-u(t-4);
t=-5:0.1:5;
f3=conv(f1(t),f2(t));
t_new=-10:0.1:10;
figure;
subplot(1,3,1); plot(t,f1(t)); title('f1');
subplot(1,3,2); plot(t,f2(t)); title('f2');
subplot(1,3,3); plot(t_new,f3); title('conv(f1,f2)');