多选题1分 设置 Select the correct description about the frequency of the signal x[n]=Acos(@on) A @o =00 is the highest frequency. B @=2z is the highest frequency. @=x is the highest frequency. 00 =π is the lowest frequency. @=2z is the lowest frequency. =0 is the lowest frequency. G 3xis lower frequency than @ △A H is higher frequency than 3 提交 3 10/18/2022 Zhongguo Liu_Biomedical Engineering_Shandong Univ.3 10/18/2022 Zhongguo Liu_Biomedical Engineering_Shandong Univ. Select the correct description about the frequency of the signal . is the highest frequency. is the highest frequency. is the highest frequency. is the lowest frequency. A B C D 提交 0 x n A n [ ] cos( ) =  0 =  0   = 2   0 = E is the lowest frequency. F is the lowest frequency.   0 = 0   = 2 0 = 0 G is lower frequency than . H is higher frequency than . 0 3 4   = 0 7 4   = 0 3 4   = 0 7 4   = 多选题 1分 multiple choice