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Only answer if you're 100% sure! Thank you! Consider the function f :Z Z given by f(n) - n- 3, if n is odd (a)

Only answer if you're 100% sure! Thank you!

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Consider the function f :Z Z given by f(n) - n- 3, if n is odd (a) Is f injective? Prove your answer. (b) Is f surjective? Prove your

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