When1: 1772
Who: Jean Le Rond d'Alembert [d'Alembert, Jean Le Rond]
What: mathematician
Where: Paris, France
works\ Preliminary Discourse to the Encyclopedia [1772]
Detail: He lived 1717 to 1783 and studied differential equations and multiple integrals and invented d'Alembert's test. He found that Newton's 3rd law applies to free bodies {d'Alembert's principle}.
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Date Modified: 2022.0224