I used quotient rule and chain rule.

The solution keep getting is wrong. I think my algebra is off.:

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- July 28th 2010, 05:24 PMsuperduper1find the derivative

I used quotient rule and chain rule.

The solution keep getting is wrong. I think my algebra is off.: - July 28th 2010, 05:29 PMAlso sprach Zarathustra
y'=3{(x^2+1)/(x^2-1)}^2 * {2x(x^2-1)-2x(x^2+1)}/{x^2-1}^2=...

}

=3{(x^2+1)/(x^2-1)}^2 * {2x{x^2-1-x^2-1}/{(x^2-1)^2}=

=3{(x^2+1)/(x^2-1)}^2 * {2x{-2}/{(x^2-1)^2}=

=3{(x^2+1)/(x^2-1)}^2 * {-4x/{(x^2-1)^2}=

=-12x/(x^2-1)}^4 - July 28th 2010, 05:30 PMskeeter
- July 28th 2010, 05:31 PMpickslides
I get

take out common factors to do some additional cancellations. - July 28th 2010, 05:42 PMsuperduper1
I think the mistake is somewhere after here:

What is this when simplified? I think this is throwing me off. The 3 in front and the ^2 in the back

- July 28th 2010, 06:51 PMskeeter