I'm having trouble seeing how an example comes out because the "worked example" skips about 5 steps and I can't get from point a to b.(adsbygoogle = window.adsbygoogle || []).push({});

It starts as:

[tex] \frac{\frac{d}{dt}(\frac{3t^{2}-3}{3t^{2}-6t})}{3t^2-6t} [/tex]

and is meant to end up as:

[tex] \frac{-2(t^{2}-t+1)}{3t^{3}(t-2)^{3}} [/tex]

I end up with a mess looking nothing like that and I suspect it's because I've missed some cunning common factor that iseasyto spot provided you've already done the problem.

I used the quotient rule for the top part.

[tex] \frac{u}{v} = \frac{u'v-uv'}{v^{2}} [/tex]

My rearrangement looks like this:

[tex] \frac{-3t^{2}-t+1}{(3t^{2}-6t)^{3}} [/tex]

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# Homework Help: Parametric second derivative

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