The Risch Algorithm was mentioned in a recent XKCD[1]. Perhaps that was the trigger for this submission. There were a few rabbit holes to investigate from that

The Risch Algorithm was mentioned in a recent XKCD[1]. Perhaps that was the trigger for this submission. There were a few rabbit holes to investigate from that comic. Bessel functions were what first piqued my curiosity. I never did get around to the Wikipedia page, but Wikiquote[2] had some interesting quips. [1]: https://xkcd.com/2117/ https://xkcd.com/2117/ [2]: https://en.wikiquote.org/wiki/Bessel_function https://en.wikiquote.org/wiki/Bessel_function