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I Fundamental Thermodynamics Relation

  1. Feb 5, 2017 #1
    Hello! I am a bit confused by the formula ##dU = TdS - PdV##. If I want to compute for example ##\frac{\partial U}{\partial V}## I obtain ##-P##, but how should I proceed to obtain, for example ##\frac{\partial U}{\partial P}## or ##\frac{\partial P}{\partial T}## which are not obvious from the equation? Thank you!
     
  2. jcsd
  3. Feb 6, 2017 #2
    For those partial derivatives you mention, you need to specify what is being held constant.
     
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