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| 1. |
Let f be the subset of Z × Z defined by f = {( ab , a + b ): a , b ∈ Z }. Is f a function from Z to Z : justify your answer. |
| Answer» Let f be the subset of Z × Z defined by f = {( ab , a + b ): a , b ∈ Z }. Is f a function from Z to Z : justify your answer. | |