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Let X = {1, 2, 3, 4} and Y = {2, 3, 4, 5}. Define f...

Let X = {1, 2, 3, 4} and Y = {2, 3, 4, 5}. Define f : X → Y by 1, 2, 3, 4 → 4, 2, 5, 3. Check that f is one to one and onto and find the inverse function f -1.

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