I was curious and started reading up about non-elementary functions, and their integrals and asked myself how one would integrate the function $x!$, as I can't even imagine integrating the $\pi$ function but I am curious as to how someone else may do it because how would someone integrate the integral sign in the function. I'm not even sure where I would start with such a function.
2026-04-18 14:20:50.1776522050
Is there an integral for $\int x! dx$
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