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int dx/((1+e^(x))(1+e^(-x))...

`int dx/((1+e^(x))(1+e^(-x))`

A

`1/(1+e^(x)) + c`

B

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

C

`1/e^(x) +c`

D

`1/((1+e^(x))^(2)) + c`

Text Solution

Verified by Experts

The correct Answer is:
B
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