# I'm having trouble with this set of problems (derivatives)

**Question description**

If f(x) = ln(xe^-x + e^-x), find f(x)

A. (-x)/(1+x)

B. (1-x)/(1+x)

There's C, D, and E, but I'd like to try to figure those out on my own if someone points me in the right direction

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