Let phi (x) be the inverse of the functi...

Let `phi (x)` be the inverse of the function `f(x) and f'=1/(1+x^5),` then `d/(dx) phi(x)` is

A

`1/(1+ [phi(x)]^(5))`

B

`1/(1+[f(x)]^5)`

C

`1 + [phi (x)]^(5)`

D

`1 + f(x)`

Verified by Experts

The correct Answer is:

C

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