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Old 2008-09-24, 21:39   #5
ewmayer
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Sep 2002
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Quote:
Originally Posted by Kevin View Post
The method ewmayer used is called implicit differentiation, if you haven't seen it before.

http://en.wikipedia.org/wiki/Implici...ifferentiation

Also, ewmayer screwed up a few derivatives in the final expression =P. It should read

1 = ( -2*dV/V^3)*(V-c) + (b + 1/V^2)*(dV)
Thanks for being my "caffeine conscience, Kevin - apparently I'd forgotten how to differentiate a constant - tricky stuff, that. :)
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