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Question 1 16 pts Which of the following functions f: Z Z are not one to one? f(x) = x^2 f(x) = x + 1

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Question 1 16 pts Which of the following functions f: Z Z are not one to one? f(x) = x^2 f(x) = x + 1 f(x) = sqrt(x) f(x) = 12

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