已知信号f(t)的波形如下图所示，则f(6-2t)的波形图为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201906/414e4bc7b0b44f6e8f660e9dd1189014.bmp
举一反三
- 已知信号f(t)的波形如下图所示，则f(6-2t)的波形图为http://ima...8f660e9dd1189014.bmp
- 已知f1(t)和f2(t)波形如下，若f(t)=f1(t)*f2(t)，则f(0)=http://image.zhihuishu.com/zhs/onlineexam/ueditor/201906/e38151c6fa664a008f547dd1af821f92.bmp
- 信号f1(t)和f2(t)如下图所示，f(t)=f1(t)*f2(t)，则f(-1)等于http://image.zhihuishu.com/zhs/onlineexam/ueditor/201906/0749958f4da44655959aea343dbe4d9c.bmp
- 周期信号f(t)如下图所示，其直流分量为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201906/bb02e5afe3fa474093913374442813ab.png
- 已知f(t)的波形如下图所示，则f(t)的表达式为http://image.zh...963ef32621219be9.bmp