Question: Question 2 (7 points). Let A and B be nonempty sets. Prove the following statements. (a) For any function f : A - A, if

Question 2 (7 points). Let A and B be nonempty
Question 2 (7 points). Let A and B be nonempty sets. Prove the following statements. (a) For any function f : A - A, if f o f is onto, then f is onto

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