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

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

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
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