Derivative of Integral where the integral has x'es in both

[scrum]

Find the derivative of the function

My answer is (3x)^2-8)/((3x)^2+8))-(((2x)^2-8)/((2x)^2+8) but it's wrong.

 

[galactus]

Did you try:

\(\displaystyle \frac{d}{dx}\int_{h(x)}^{g(x)}f(u)du=f(g(x))g'(x)-f(h(x))h'(x)\)

 

[scrum]

Ah I see a chain rule type thingy.

Thanks again .