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[函数] 函数

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lrh2006 posted 2016-10-17 14:04 |Read mode
满足f(f(x))=x的函数有些什么性质,或者有些什么相关的题目,各位可否指点下,谢谢!

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kuing posted 2016-10-17 14:19
不好说,它可以是很复杂的函数,你可以在《撸题集》里搜索 f(f(x)) 看看有没有相关问题

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original poster lrh2006 posted 2016-10-17 14:30
回复 2# kuing


    好的,但是撸题集页数多,有次为了翻到某页,费了九牛二虎之力,是我不会用搜索功能吗?

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kuing posted 2016-10-17 14:35
好的,但是撸题集页数多,有次为了翻到某页,费了九牛二虎之力,是我不会用搜索功能吗?
lrh2006 发表于 2016-10-17 14:30
是的,一般PDF阅读器应该有搜索功能,你按按Ctrl+F试试

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original poster lrh2006 posted 2016-10-17 14:38
回复 4# kuing


    好的,我试试看。谢谢k神不吝指教。

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