In the early 1930s Richard Feynman's high school did not offer any courses on calculus. He decided to teach himself calculus and read Calculus for the Practical Man and took meticulous notes. Here is a look inside one of Feynman's notebooks.

Posted Apr 29, 2023, 7:57 PM UTC
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In Surely, You're Joking... he discussed inventing his own notation for calculus, not knowing that Leibniz and Newton already worked out much of it.