What's the second derivative of (12-3x)/sqrt(6-x)

Thanks I've been trying for a good amount of time and my answer doesn't compare to that of online derivatives calculators thanks

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- Feb 5th 2013, 09:39 PMmathisfun26Second derivative help
What's the second derivative of (12-3x)/sqrt(6-x)

Thanks I've been trying for a good amount of time and my answer doesn't compare to that of online derivatives calculators thanks - Feb 5th 2013, 09:42 PMProve ItRe: Second derivative help
Write it as $\displaystyle \displaystyle \begin{align*} \left( 12 - 3x \right) \left( 6 - x \right) ^{-\frac{1}{2}} \end{align*}$ and then apply the product rule. For the derivative of $\displaystyle \displaystyle \begin{align*} \left( 6 - x \right) ^{-\frac{1}{2}} \end{align*}$ you will need to use the chain rule also...

- Feb 5th 2013, 09:46 PMmathisfun26Re: Second derivative help
I got -6/2(6-x)^3/2

I'm pretty sure I got the bottom portion right I'm not sure about the top - Feb 5th 2013, 09:53 PMibduttRe: Second derivative help