Question: Not sure If I am correctly solving the following problem. Your guidance is required. Consider the function f : N -> N by f(x) =

Not sure If I am correctly solving the following problem. Your guidance is required.

Consider the function f : N -> N by f(x) = x + 3.

a. Prove or disprove:f is onto.

b. Prove or disprove: is one to one.

Thank you.

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