Principle extremum of full action

A new variational principle extremum of full action is proposed, which extends the Lagrange formalism on dissipative systems. It is shown that this principle is applicable in electrical engineering, mechanics, taking into account the friction forces. Its applicability to electrodynamics and hydrodynamics is also indicated. The proposed variational principle may be considered as a new formalism used as an universal method of physical equations derivation, and also as a method for solving these equations. The formalism consists in building a functional with a sole saddle line; the equation that describes it presents the equation with dynamic variables for a certain domain of physics. The solution method consists in a search for global saddle line for given conditions of a physical problem.