- #1
thonwer
- 60
- 0
Homework Statement
Show that: [itex] (\frac{∂T} {∂V})_S,_n=-(\frac {∂P} {∂S})_V,_n [/itex]
Homework Equations
[itex] dU=TdS-PdV+μdn [/itex]
The Attempt at a Solution
[itex] \frac {∂} {∂S} (\frac{∂U} {∂V})_S,_n=-(\frac {∂P} {∂S})_V,_n [/itex]
[itex] \frac {∂} {∂V} (\frac{∂U} {∂S})_V,_n=(\frac{∂T} {∂V})_S,_n [/itex]
I tried to isolate T and P, but I get stuck:
[itex] TdS=dU+PdV [/itex]
[itex] -PdV=dU-TdS [/itex]
How can I demonstrate that they are equal?