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