Question: 8. A function f : Z x Z - Z x Z is defined as f(m,n) =(m +n,2m +n). Verify whether this function is injective

8. A function f : Z x Z - Z x Z is defined as
8. A function f : Z x Z - Z x 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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