Elementary, My Dear Watson
Sherlock Holmes calls the integral of e^(−x²) "elementary," which it famously is not: it has no elementary antiderivative.
Transcript
[Board: ∫ e^(−x²) dx] Holmes: "Elementary, my dear Watson!" Watson: "WHY DO YOU ALWAYS SAY THAT WHEN IT NEVER IS"
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2019-10-08-elementary-my-dear-watson/ (CC BY-NC 4.0)