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If f:A rarr B is an on to function such ...

If f:A `rarr` B is an on to function such that f(x)=`sqrt(|x|-x)+(1)/sqrt(|x|-x)` then A and B are respectively

A

`(- prop , oo ) , (0 , oo)`

B

`(- prop 0) , [2, oo)`

C

`(0,oo) , (2, oo)`

D

`(- oo , 0 } ( 0, oo)`

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The correct Answer is:
B
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