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If f(x) and g(x) are two functions with ...

If f(x) and g(x) are two functions with g (x) = ` x - 1/x and fog (x) =x^(3) -1/x^(3) -1/x^(3)` then f(x) is

A

`3x ^(2) +3`

B

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

C

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

D

` 3x ^(2) + (3)/( x ^(4))`

Text Solution

Verified by Experts

The correct Answer is:
A
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