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Point Transformations in the Lagrangian

  1. May 31, 2016 #1
    1. The problem statement, all variables and given/known data
    Hi, I'm working on understanding how a time independent point transformation gif.gif . effects the Lagrangian and to see how what values are co and contra variant.

    2. Relevant equations
    Would these be correct formulations, or have I overlooked something?

    3. The attempt at a solution
    for Q = 0, from
  2. jcsd
  3. Jun 1, 2016 #2
    The left side seems ok. I don't know where the right side comes from, I mean the second factor of the left side.
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