Quote:
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Originally Posted by Kevin Sevcik
1. and 2. of your system are incorrect. The left hand side is correct, but the right hand side is wrong. What is the derivative of (x-1)^2 with respect to x? Ditto (y-1)^2 w.r.t. y. You might try fully expanding the expression and then deriving it if you're still getting 2x and 2y.
Hint: The chain rule always applies in derivatives, everywhere, all the time.
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Darned me and those shortcuts. I didn't think the constant offset would change it much.
Ok, it doesn't. Just 2(
x - 1) instead. It's always the little things.
Man, what's the point of teaser videos if nobody looks closely at them. - Knufire [more] 
26-11-2006, 01:12
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