已知序列x(n)={1,0,1,1,2},试计算 (1)x(n)*x(n) (2) x(n)⑤ x(n) (3) x (n) ⑩x (n)
时间: 2023-12-26 21:03:53 浏览: 79
计算x的n次方
首先,我们需要明确一下符号的含义:
- “*” 表示卷积操作,即离散卷积。
- “⑤” 表示序列连乘,即将该序列连乘五次。
根据定义,可得:
(1) x(n)*x(n) = {1, 1, 2, 3, 3, 4, 2}
(2) x(n)⑤ = {1, 0, 1, 1, 2}⑤ = {1, 0, 1, 1, 2, 0, 0, 0, 0, 0, 0}
x(n)⑤ x(n) = {1, 0, 1, 1, 2, 0, 0, 0, 0, 0, 0} * {1, 0, 1, 1, 2, 0, 0, 0, 0, 0, 0} = {1, 0, 2, 3, 4, 3, 3, 2, 0, 0, 0}
(3) x(n) ⑩x(n) = {1, 0, 1, 1, 2} ⑩ {1, 0, 1, 1, 2} ⑩ {1, 0, 1, 1, 2} ⑩ {1, 0, 1, 1, 2} ⑩ {1, 0, 1, 1, 2} = {1, 0, 1, 1, 2, 0, 1, 1, 4, 3, 6, 3, 5, 4, 4, 2, 4, 3, 2, 0, 0, 0, 0, 0, 0}
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