I don't know much about the subject, besides some diagrams and youtube vids, so please bear with me. I'm trying to make a reverse heat pump to cool a small room.
If I had a heat reservoir (in a box within the same room) that could increase the temperature/pressure of a refrigerant and then...
relax. If anything I'm making your thread more popular, but now that I've properly hi-jacked this thread.. LET ME FLY IT THROUGH THE GROUND! http://upload.wikimedia.org/wikipedia/commons/0/07/757_pentagon.gif
I have a question on the application of the gradient vector:
say A textbook question told me to "Find the directional derivative of f(x,y,z)=xy+z^2 at (1,1,1) in the direction towards (5,-3,3)."
I have attempted this problem 3 times yet my answer is not the answer in the back of the answer...