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Let f be the subset of Z × Z defined by f = {(ab, a + b) : a, b Î Z}. Is f a function from Z to Z? Justify your answer.

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answered Dec 25, 2016 by sforrest072 (157,439 points)

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Let f be the subset of Z × Z defined by f = {(ab, a + b) : a, b Î Z}. Is f a function from Z to Z? Justify your answer.

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