Question: Please write answers neatly & show work 7. (4 points) Let f : A - B. Suppose that f is injective. Prove that there exists

Please write answers neatly & show work

7. (4 points) Let f : A - B. Suppose that f is injective. Prove that there exists a function g : B - A such that go f = LA. Here, LA is the identity function on A

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