. "http://en.wikipedia.org/wiki/Lagrangian"^^ . "\\(L(q_i, \\dot{q_i}) = T(q_i, \\dot{q_i}) - V(q_i)\\), where \\(T\\) is kinetic energy, \\(V\\) is potential energy, \\(q_i\\) is a generalized coordinate, and \\(\\dot{q_i}\\) is a generalized velocity."^^ . "The Lagrange Function is a function that summarizes the dynamics of the system." . "http://www.iso.org/iso/catalogue_detail?csnumber=31889"^^ . . . "Lagrange Function"@en . "http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=113-03-76"^^ . . "L" .