1. The problem statement, all variables and given/known data The law for an ideal gas is given by P = n*R*T/V. In our case, n and R are constant, so P = f(V,T). I have found dP/dT, dT/dV and dV/dP. I have to find the result when these three differentials are multiplied with eachother. 3. The attempt at a solution I get -1 - can you guys confirm this? And what does this mean?