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For questions involving the Lagrangian formulation of a dynamical system. Namely, the application of an action principle to a suitably chosen Lagrangian or Lagrangian Density in order to obtain the equations of motion of the system.

3 votes
3 answers
1k views

Variations wrt. Time Derivatives

I've been working on my dynamics homework when I've run into confusion with derivatives and could use some help regarding that. The question is as follows: When varying a functional with respect to a …
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