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Taking the derivative

  1. Mar 8, 2010 #1
    In the text (attached) I can't figure out how they are making the jump from the first eqn to the second eqn. Any guidance would be helpful. Thanks

    Attached Files:

  2. jcsd
  3. Mar 9, 2010 #2


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    Apparently, p=p2 and ρ=ρ2, and p is a function of 1/ρ. The quantities q, p1, and ρ1 are constants.


    If you let x=1/ρ, you can write the equation as


    Differentiate that equation with respect to x and solve for p'(x).
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