- #1
Tphysics
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1. The answer to this problem is easy when plugged into mathematica it's (pi^2)/3. I am trying to integrate it by hand however and can't figure out how to start it. I also can't find any other attempts of it online (our professor says we can just look it up if we can find it).
[(x^2*E^x)/(E^x + 1)^2, {x, -Infinity, Infinity}]
2. No equations
3. I've tried U-sub with setting U= (e^x+1) and then tried some integration by parts but I'm not getting there.
[(x^2*E^x)/(E^x + 1)^2, {x, -Infinity, Infinity}]
2. No equations
3. I've tried U-sub with setting U= (e^x+1) and then tried some integration by parts but I'm not getting there.