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Old November 14th, 2007, 09:27 AM
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Quote:
Originally Posted by jabroni1212 View Post
I just tried it without the x' just as x, and it doesn't seem to minimize. I am pretty sure it is as I wrote above.
3x^2 - \frac{8}{x} has a (relative) minimum. You just have to work at it a bit.

Otherwise, I'd just treat the x' as a constant.

-Dan
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