频谱F(jω)=jw/(1+w2)的傅里叶反变换f(t)为
A、0.5[etu(-t)-e-tu(t)]
B、etu(-t)-e-tu(t)
C、0.5[e-tu(-t)-etu(t)]
D、0.5[e-tu(-t)+etu(t)]
发布时间:2025-10-15 14:54:37
A、0.5[etu(-t)-e-tu(t)]
B、etu(-t)-e-tu(t)
C、0.5[e-tu(-t)-etu(t)]
D、0.5[e-tu(-t)+etu(t)]