Formula_14984

\[L\left(x, u, \delta \frac{\partial u}{\partial x}, \ldots, \partial^{|m|} \frac{\partial^{|m|_{u}}}{\partial x^{m}}, \delta, h\right)=0, \quad x=\left(x_{0}, x_{1}, \ldots, x_{n}\right),\]