Question: Let A={1, 2, 3, 4} and B={u, v, w}. (a) Give an example of a relation from A to B that is not a function,

Let A={1, 2, 3, 4} and B={u, v, w}.

(a) Give an example of a relation from A to B that is not a function, or explain why no such relation exists.

(b) How many functions f satisfy fAB?

(c) Give an example of a function fAB which is onto but not one-to-one, or explain why no such function exists.

(d) Give an example of a function fAB which is one-to-one but not onto, or explain why no such function exists.

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