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let f be the subset of Z*Z defined by f={(ab,a+b):a,b belongs to Z} .is f a function from Z to Z? justify your answer

let f be the subset of Z*Z defined by f={(ab,a+b):a,b belongs to Z} .is f a function from Z to Z? justify your answer

Grade:11

1 Answers

pratish shrivastava
31 Points
11 years ago

f is not a function ,because element "0" contains more than one unique image

example:-(0,2),(0,3),(0,4) ,all belong to f

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