itrans.m

经典《信号与系统》教程的matlab例程,对深入理解信号与系统相关概念有很大帮助

close all,clear,
Syms t;
f=sym('u(t)-u(t-1)-(t-2)*(u(t-1)-u(t-2))');
f1=subs(f,t,-3*t+1);
Subplot(211)
ezplot(f,[-3,3]);grid on, axis([-3,3,-0.1,1.2])
Subplot(212)
ezplot(f1,[-3,3]);grid on,axis([-3,3,-0.1,1.2])