Saturday, January 29, 2005

Partial Diff Eqs

Ok, so we just finished our third week of class and we are still just looking at theorems, proofs, and classifications of solvable PDE's. We haven't even looked at techniques to solve them, just whether or not a particular problem has a solution and over what interval the solution is valid. We did, however, derive the heat equation in a rod. That was interesting. Anyway, I found this joke:

An Engineer, Physicist, and Mathematician are sleeping in the same hotel. The Engineer smells smoke and finds a fire has started in the hall way. He sees a fire extinguisher on the wall and puts the fire out and goes back to bed.
The Physicist smells smoke and finds a fire in the hall. He sees a sprinkler switch, hits it, puts the fire out, and goes back to bed.
Finally, the Mathematician smells smoke and finds a fire in the hall way. He walks out, looks around, finds a fire hose and says:
"Aha, a solution exists!" and goes back to bed.

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