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  1. mathematics
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  3. let x = {1, 2, 3, 4}, y = {a, b, c}. (1) give an e

Let X = {1, 2, 3, 4}, Y = {a, b, c}. (1) Give an example...

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Advance Math

Let X = {1, 2, 3, 4}, Y = {a, b, c}.

(1) Give an example for f : X ? Y so that ?y ? Y, ?x ? X, f(x) =y. 1 2

(2) Give an example for f : X ? Y so that ?y ? Y, ?x ? X, f(x) =y.

(3) Give an example for f : X ? Y and g : Y ? X so that f ? g =IY

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