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int (dx)/(1+3 sin^(2)x)dx is :...

`int (dx)/(1+3 sin^(2)x)dx` is :

A

`1/3 tan^(-1)(3tan^(2)x)`

B

`1/2 tan^(-1)(2tanx)`

C

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

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
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