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If primitive of sqrt((1+secx)) is 2fog(x...

If primitive of `sqrt((1+secx))` is `2fog(x)=c`, then

A

`g(x)=secx-1`

B

`g(x)=sqrt((secx-1))`

C

`f(x)=2tan^(-1)x`

D

`f(x)=tan^(-1)x`

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