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

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

A

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

B

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

C

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

D

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

Verified by Experts

The correct Answer is:

A

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