int1/(1+e^(x))dx is equal to...

`int1/(1+e^(x))dx` is equal to

A

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

B

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

C

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

D

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

Verified by Experts

The correct Answer is:

C

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