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

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

A

(a) `logabs(x-e^(-x))+c`

B

(b) `logabs(x+e^(-x))+c`

C

(c) `logabs(1+xe^(x))+c`

D

(d) `(1+xe^(x))^(2)+c`

Verified by Experts

The correct Answer is:

C

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