

1、填空题:
序列x[n] = [1,2,3,4], y[n] = [3,2,1,1], 请问x[n]+y[n]等于多少?
答案: 【 [4,4,4,5]】
2、填空题:
序列x[n] = [1,2,3,4], y[n] = [3,2,1,1], 请问x[n]与y[n]卷积和等于多少?
答案: 【 [3,8,14,21,13,7,4]】
1、单选题:
Consider aa causal and stable system
. To make its inverse system
stable, the impulse response of
should be ( )
选项:
A: 
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