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int (tanx)/(1+tan^(2)x)dx=...

`int (tanx)/(1+tan^(2)x)dx=`

A

`(1)/(2)cos 2x+c`

B

`-(1)/(2)cos 2x+c`

C

`(1)/(4)cos 2x+c`

D

`-(1)/(4)cos 2x+c`

Text Solution

Verified by Experts

The correct Answer is:
D
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