[理工] 讯号与系统 折积问题

楼主: beginner0602 (A'N'D小宇宙)   2018-06-23 12:14:13
https://i.imgur.com/7B714KJ.jpg
各位高手好!
如图x2是x1跟x1的折积
请问为何是3/2不是3?
感谢啊啊啊

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