Question: Let A = B = {1, 2, 3}, and consider the function f: A B defined as follows: f(1) = 3, f(2) = 1, f(3)

Let A = B = {1, 2, 3}, and consider the function f: A B defined as follows: f(1) = 3, f(2) = 1, f(3) = 3. Is f onto? Why or why not?

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