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int(tanx)/(sqrt(sin^(4)x+cos^(4)x))dx=...

`int(tanx)/(sqrt(sin^(4)x+cos^(4)x))dx=`

A

`log(tan^(2)x+sqrt(1+tan^(4)x))+c`

B

`(1)/(2).log(tan^(2)x+sqrt(1+tan^(4)x))+c`

C

`(1)/(4).log(tan^(2)x-sqrt(1+tan^(4)x))+c`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
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