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April 17, 2014

April 17, 2014

Posted by **Denzel** on Thursday, November 4, 2010 at 9:08pm.

(x^2+12)(9-x^2)?

- calculus -
**Michael**, Thursday, November 4, 2010 at 11:09pmok. well first of all, use the product rule: f(x)g'(x) + g(x)f'(x) then set the derivative = to 0

(x^2 +12)(-2x) + (9-x^2)(2x)=0

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