Ptt 大爆卦 | ∘ - 前往 https://math.stackexchange.com/questions/2349/how-to-prove-f-circ-g-1-g-1-circ-f-1-inverse-of-compositio

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並前往https://math.stackexchange.com/questions/2349/how-to-prove-f-circ-g-1-g-1-circ-f-1-inverse-of-compositio

How to prove (f∘ g)−1=g−1∘ f−1? (inverse of composition)

You put your socks first and then your shoes but you take off your shoes before taking off your socks.

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