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MATH CHALLENGE

Name: Anonymous 2007-09-19 10:00 ID:ph94594W

I bet noone can integrate this:

x/(exp(-x) + x^2)

Name: Anonymous 2007-09-19 22:17 ID:4CmNHm4M

Use long division, but keep in terms of e^(-x). Then, assuming uniform convergence, interchange the summation and the integral sign, and then integrate. You'll probably end up with a double sum. Mathematica refused to evaluate it.
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