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Need help with euler langrange equation.

  1. Apr 8, 2012 #1
    Need urgent help with euler langrange equation.

    So i've identified the euler langrange equation in my problem as

    d/dt (∂L/(∂x: ̇))-∂L/∂x=0

    translates to d/dS (∂L/(∂C: ))-∂L/∂C=0

    if L is L=43.007 ln(C)-0.0042S^2-3.4339S+1059.37

    whereby ∂C:= ∂C/∂S.

    How do i solve this?? I am stuck.
     
  2. jcsd
  3. Apr 8, 2012 #2

    Office_Shredder

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    Re: Need urgent help with euler langrange equation.

    You should probably start by calculating some derivatives
     
  4. Apr 8, 2012 #3
    Re: Need urgent help with euler langrange equation.

    I can't get ∂L/(∂C:)
     
  5. Apr 8, 2012 #4

    Office_Shredder

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    Re: Need urgent help with euler langrange equation.

    Why?
     
  6. Apr 8, 2012 #5
    Re: Need urgent help with euler langrange equation.

    what do you mean why?

    I have no clue how to get ∂L/(∂C:).

    I do however get ∂L/∂C as 43.007/C
     
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