I was recently introduced to Numerical analysis to solve PDEs and I was wondering wether this kind of approach was also used barehand to reach approximate conclusions in the same way it is now done by employing calculators.
2026-03-27 16:26:52.1774628812
Did anybody use numerical analysis before modern computers were introduced?
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Gauss calculated the orbit of Ceres
https://sites.math.rutgers.edu/~cherlin/History/Papers1999/weiss.html
Perhaps this answers your question.