homework8.m

信号与系统分析以matlab实现

t=[0:0.001:31];
y1=sin(pi*t/4).*cos(pi*t/4);
y2=cos(pi*t/4).*cos(pi*t/4);
y3=sin(pi*t/4).*cos(pi*t/8);
y4=sin(pi*t/4).*cos(pi*t/4)+cos(pi*t/4).*cos(pi*t/4);
 
subplot(3,1,1);
plot(t,y1,'r');
subplot(3,1,2);
plot(t,y2,'r');
subplot(3,1,3);
plot(t,y3,'b');
figure(2);
plot(t,y4,'r');