When integrating plank's fomula to obatin boltzman law,(adsbygoogle = window.adsbygoogle || []).push({});

I need to integrate

f(x) = x^3/(e^x-1) from 0 to infinity, the result is pi^4/15

Does anybody have any idea on how to do this elegantly??

Thank you.

Jaap

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# Homework Help: How to solve this integral

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