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genericusrnme
genericusrnme is offline
#3
Feb18-12, 09:56 AM
P: 615
You can do it without going all that dirty work by looking at the action

[itex]S=\int L dt = \int (L' + \frac{dF}{dt})dt [/itex]

That method seems much neater to me

Mod note: removed remaining steps.