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Let A={2,3,4,5,6},B={5,8,11,14,17} and f...

Let `A={2,3,4,5,6},B={5,8,11,14,17} and f:A rarr B` be given by `y=f(x) =3x-1` where `x in A ` and `y in B`. Show that ,`f` is an onto mapping.

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The correct Answer is:
`f(A) =B`
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