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int(dx)/(e^(3x)+e^(-3x))=...

`int(dx)/(e^(3x)+e^(-3x))=`

A

`(1)/(3)tan^(-1)e^(-3x)+c`

B

`(1)/(3)tan^(-1)e^(3x)+c`

C

`3tan^(-1)e^(-3x)+c`

D

`tan^(-1)e^(3x)+c`

Text Solution

Verified by Experts

The correct Answer is:
B
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