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Equation calculus question

  1. Dec 8, 2005 #1
    for the equation:
    dU=TdS-PdV
    why can you can the total derivative to a partial derivative, which makes the equation become
    T=(partial derivative U)/(partical derivative S) ?
     
  2. jcsd
  3. Dec 8, 2005 #2

    StatusX

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    You are taking the partial derivative of U with respect to S with V held fixed. So you take dV=0, and then divide through by dS.
     
  4. Dec 9, 2005 #3

    dextercioby

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    Because dU is an integrable differential one-form.

    Daniel.
     
  5. Dec 9, 2005 #4
    thank you very much!!! :)
     
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