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| [[File:Least action sketch.png|thumb|Sketch of a trajectory in position-velocity configuration space and its partial derivatives]]
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| Classical Mechanics can be formulated directly and generally by applying calculus to trajectories/curves in space. For concreteness and an alternate presentation, we describe the formulation backwards from the first few pages of Landau's mechanics.
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| === Initial Lagrangian Framing === | | === Initial Lagrangian Framing === |