1. ## Second 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

2. ## Re: Second derivative help

Write it as \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 \begin{align*} \left( 6 - x \right) ^{-\frac{1}{2}} \end{align*} you will need to use the chain rule also...

3. ## Re: 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