The story
Named after the French physicist and mathematician Jean le Rond d'Alembert, who derived it in 1747.
Etymology from Wiktionary, CC BY-SA 4.0.
d'Alembert's formula
Today it means: The general solution to the one-dimensional wave equation u_tt-c^(2u_)xx=0,,u(x,0)=g(x),,u_t(x,0)=h(x), for -∞0. Full definition →