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In which of the following intervals two ...

In which of the following intervals two function `f (x) =x and g(x) =+ sqrt(x^(2))` are same ?

A

`0 lt x lt oo`

B

`0 le x lt oo`

C

`-oo lt x lt oo`

D

`-oo lt x le 0`

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The correct Answer is:
B
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