Let A be a set and f a function with f W A ! A. a. Suppose f is one-to-one. Must f be
Chapter 26, Problem 26.11(choose chapter or problem)
Let A be a set and f a function with f W A ! A. a. Suppose f is one-to-one. Must f be onto? b. Suppose f is onto. Must f be one-to-one? Justify your answers.
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