Let f: W ? X, g: X ? Y, and h: Y ? Z be functions. Must h
Chapter 7, Problem 20E(choose chapter or problem)
Problem 20E
Let f: W → X, g: X → Y, and h: Y → Z be functions. Must h ◦ (g ◦ f) = (h ◦ g) ◦ f ? Prove or give a counterexample.
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