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A={a,b,c,d,e}B={0,1,2} and let N be the set of natural numbers. (a) Construct an injective function f1 from B to AB. If such a function does

A={a,b,c,d,e}B={0,1,2} and let N be the set of natural numbers. (a) Construct an injective function f1 from B to AB. If such a function does not exist, explain why. (b) Construct a surjective function f2 from A to a proper subset of N. If such a function does not exist, explain why

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