Section 26

Nothing about this section seemed terribly complicated, at it was all pretty intuitive. I've dealt with composite functions in calculus when integrating and differentiating, so that part wasn't necessarily new to me. What seems really hard is keeping track of the domain and codomains, as well as the surjective and injective properties when you compile 3 or 4 sets together to create a function. Other than that, the simple calculation and scratch work doesn't seem that bad.

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