If f(x)=(x)/(sqrt(1+x^(2))), then fofof(...

If `f(x)=(x)/(sqrt(1+x^(2)))`, then `fofof(x)` is equal to:

A

`(3x)/(sqrt(1+x^(2)))`

B

`(x)/(sqrt(1+3x^(2)))`

C

`(3x)/(sqrt(1-x^(2)))`

D

None of these

Verified by Experts

The correct Answer is:

B

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