Iff^(prime)(x)=1/(-x+sqrt(x^2+1))a n df(...

`Iff^(prime)(x)=1/(-x+sqrt(x^2+1))a n df(0)=(1+sqrt(2))/2t h e nf(1)` is equal to `-"log"(sqrt(2)+1)` (b) 1 `1+sqrt(2)` (d) none of these

A

`-log(sqrt(2-1))`

B

1

C

`1+sqrt2`

D

`log(1+sqrt2)`

Verified by Experts

The correct Answer is:

A, D

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