已知信号f(t)如题7图所示,则其傅里叶变换为( )。A、Sa(ω) Sa(2ω)B、https://bgk-photo.cdn.bcebos.com/a8014c086e061d95c40840596bf40ad162d9ca01.jpgC、2Sa(ω) 4Sa(2ω)D、Sa(ω) 2Sa(2ω)E、4Sa(ω) 2Sa(2ω)
已知信号f(t)如题7图所示,则其傅里叶变换为( )。
A、Sa(ω) Sa(2ω)
B、https://bgk-photo.cdn.bcebos.com/a8014c086e061d95c40840596bf40ad162d9ca01.jpg
C、2Sa(ω) 4Sa(2ω)
D、Sa(ω) 2Sa(2ω)
E、4Sa(ω) 2Sa(2ω)
发布时间：2025-08-02 12:26:38
