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If f:[0,infty) rarr [0,infty) " and " f(...

If `f:[0,infty) rarr [0,infty) " and " f(x)=x/(1+x)`, then f is

A

one-one and onto

B

one-one but not onto

C

onto but not one-one

D

neither one-one nor onto

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The correct Answer is:
B
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