8.已知y(t)=(t)* h(t)f(r)h(t- r)则f(-1)h(-t)f(t)* h(t)=f(3t)*h(3t)=
8.已知y(t)=(t)* h(t)f(r)h(t- r)则f(-1)h(-t)f(t)* h(t)=f(3t)*h(3t)=
发布时间:2025-10-11 19:19:07
8.已知y(t)=(t)* h(t)f(r)h(t- r)则f(-1)h(-t)f(t)* h(t)=f(3t)*h(3t)=