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Let A = {1,2,3,4}, B = {1,5,9,11,15,16}...

Let A = {1,2,3,4}, B = {1,5,9,11,15,16} and f = {(1,5),(2,9),(3,1),(4,5),(2,11),}. Are the following true? F is a function from A to B. Justify your answer.

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i) Yes ii) No. iii) In case (i) `f` is a subset of `A xx B` and in case of (ii) 2 has two images.
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V PUBLICATION-RELATIONS AND FUNCTIONS-QUESTIONBANK
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