Lagrange Joseph Louis

La·grange

 (lə-grānj′, -gränj′, lä-gräNzh′), Comte Joseph Louis 1736-1813.
French mathematician and astronomer. He developed the calculus of variations (1755) and made a number of other contributions to the study of mechanics.

La·grange

(lə-grānj′, lə-gränj′), Comte Joseph Louis 1736-1813.
French mathematician and astronomer who made important contributions to algebra and calculus. His work on celestial mechanics extended scientific understanding of planetary and lunar motion.