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May 26, 2015

Homework Help: calculus (derivativs)

Posted by Eve on Tuesday, September 17, 2013 at 5:57pm.

Find the points on the graph of f where the tangent line is horizontal.

original: x/x^2+25)

After I did the quotient rule I got:

(x^2+25)(1)-(x)(2x)/((x^2+25))^2

Then of course I know you set that equal to 0, but I do not know how to set it up or "finalize" the problem because of the denominator. Please help!

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