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【简答题】
(12分)已知输入序列x(n)={1,-2,3,2},线性移不变系统的单位抽样响应为h(n)= {3,1,2}。 (1) 计算输出y(n); (2) 计算x(n)和h(n)的5点圆周卷积和7点圆周卷积;并说明圆周卷积和线性卷积的关系; (3) 根据圆周卷积和定理计算线性卷积,写出详细的计算步骤;并计算复数乘法和复数加法的次数。
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It's a new model.
B.
It's on sale.
C.
That's not expensive.
D.
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E.
It's perfect.
F.
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A.
It's a reward given to an agent.
B.
It's based on the percentage of the sale.
C.
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D.
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李某
B.
张某
C.
学校
D.
李某和学校
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