#Lagrange Lagrange multipliers is a method of optimization (maximization/minimization) of functions constrained by equations, applied in economics, engineering, and machine learning. The concept of Lagrangian mechanics reformulates Newtonian mechanics using energy (kinetic/(T/) and potential/(V/)) instead of force, the foundation of calculus of variations, optimization functions, celestial mechanics, stability of the solar system... etc., please excuse the poor writing $LA
