Find the derivative.
i need help finding this, i dont know how to do it, thanks
In a nutshell. The second fundamental theorem of Calculus states:
$\displaystyle \frac d{dx} \int_c^x f(t)~dt = f(x)$
where $\displaystyle c$ is a constant
More generally (By the chain rule), $\displaystyle \frac d{dx} \int_c^{g(x)}f(t)~dt = f(g(x)) \cdot g'(x)$