Quantum redactiones paginae "Aequationes Lagrangi" differant

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:::<math> S = \int{ L(x_1,x_2,...x_{\alpha}, \dot{x}_1,\dot{x}_2,...\dot{x}_{\alpha}, t)\, dt}</math>
 
ubi ''L'' est ''functio illa Langrangiana'', <math>x_\alpha </math> denotant omnia systematis parametra sicut particularum coordinata, et <math>\dot{x}_{\alpha}</math> velocitates correspondentes. Tunc Lagrange posuit
 
:::<math> \frac{\delta S}{\delta x_\alpha} = 0</math>,