...卷积的意思",试用MATLAB绘出f(t),y(t),F(w),Y(w)的图形答:syms t w f=sym('heaviside(t+1)-heaviside(t-1)');f1 = subs(f,'t','tao');f2 = subs(f,'t','t-tao');y= int( f1*f2,'tao',-Inf,Inf)%直接换成定义拆解成符号积分 F=fourier(f)Y=fourier(y)F1=F*F;subplot(221);ezplot(t,f);subplot(222);ezplot(t,y);subplot(...
怎么做,大神求救。用MATLAB绘制信号f(t)的波形,线性变换为f(t-4)和...答:f1=sym('t*(heaviside(t)-heaviside(t-1))');f2=sym('(heaviside(t-1)-heaviside(t-2))');f3=f1+f2;figure;subplot(311),ezplot(f3,[0,10]);title('f(t)');f4=subs(f3,t,t-4);subplot(312),ezplot(f4,[0,10]);title('f(t-4)');f5 = subs(f3,t,4-2*t);subplot(...