\sethandouttitle{The Product Rule} \begin{enumerate} \item Find the derivative of $f(x) = (1+2x^2)(x-x^2)$ in two ways: by using the Product Rule and by performing the multiplication first. Do your answers agree? \vfill \item Differentiate the function. \begin{enumerate} \item $f(x) = t^3 \cos(t)$. \vfill \item $f(x) = \sin(x) \cos(x)$. \vfill \end{enumerate} \item If $f$ is a differentiable function find an expresion for the derivative of $y = x^2 f(x)$. \vfill \end{enumerate}