A function f ztimesz rarr ztimesz is defined as f mn m


A function f : Z×Z → Z×Z is defined as f (m,n) = (m+ n,2m+ n). Verify whether this function is injective and whether it is surjective.

 

 

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Mathematics: A function f ztimesz rarr ztimesz is defined as f mn m
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