Archimedes used methods involving infinitesimals to calculate areas and volumes long before the formal development of calculus.
Sources
- List of mathematics history topics (en.wikipedia.org)
- https://www.britannica.com/biography/Archimedes (britannica.com)
- https://arxiv.org/pdf/1205.0174 (arxiv.org)
- https://arxiv.org/pdf/1306.5973 (arxiv.org)
- https://mathshistory.st-andrews.ac.uk/Biographies/Archimedes/ (mathshistory.st-andrews.ac.uk)
- https://www.storyofmathematics.com/hellenistic_archimedes.html/ (storyofmathematics.com)
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