int {1+2 tan x (tan x + sec x )}^(1//2) ...

`int {1+2 tan x (tan x + sec x )}^(1//2) dx=?`

A

`log ( sec x + tan x )+c`

B

`log ( sec x + tan x )^(1//2) +c`

C

`log sec x ( sec x + tan x )+C`

D

None of these

Verified by Experts

The correct Answer is:

C

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