Today is 289th Birthday Anniversary to Joseph Louise Lagrange..... Joseph-Louis Lagrange (1736–1813) was an Italian – French mathematician who made great contributions to number theory, calculus of variations, classical & celestial mechanics. His most important book, “Analytic Mechanics” (1788) was an amazing & powerful reformulation of Newton/classical mechanics based on his own calculus of variations, Lagrange multiplier method & generalized coordinates. Giuseppe Lodovico Lagrangia Born: 25 Ja