recall: $\displaystyle \frac d{dx}e^{kx} = ke^{kx}$ for k a constant
recall: $\displaystyle \frac d{dx}a^x = a^x \ln a$ for $\displaystyle a \in \mathbb{R}, a>0$
you will also need the product rule here, since you have a product of functions
$\displaystyle \frac d{dx}f(x)g(x) = f'(x)g(x) + f(x)g'(x)$