Question: More on Functions Extra Credit: Problem 21 (1 point) Suppose f : A B is a function and X A . Check all the statements

More on Functions Extra Credit: Problem 21 (1 point) Suppose f : A B is a function and X A . Check all the statements that are true: A. f 1 ( f ( X ) ) X if f is 1-1 B. f 1 ( f ( X ) ) X C. f 1 ( f ( X ) ) X D. f 1 ( f ( X ) ) X if f is 1-1 E. None of the above

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