Functional equation: what function is its inverse's inverse? – math.stackexchange.com

Functional equation: what function is its inverse's inverse? – math.stackexchange.com

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The fact that so many students confuse functional inverse notation $$f^{-1}(x)$$ with multiplicative inverse notation $$[f(x)]^{-1}$$ got me to thinking... does there exist a function whose inverse is ...

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