\begin{frame}
  \frametitle{Differentiation Rules: Product Rule}

  \begin{block}{Product Rule}
    If $f$ and $g$ are both differentiable, then
    \begin{talign}
      \frac{d}{dx} [f(x)\cdot g(x)] \;=\; f(x) \frac{d}{dx}( g(x) ) + g(x) \cdot \frac{d}{dx}( f(x) )
    \end{talign}
  \end{block}  
  \pause\medskip
  
  In different notation
  \begin{block}{}
    \begin{malign}
      (f\cdot g)'(x) \;=\; f(x) \cdot g'(x) + f'(x) \cdot g(x)
    \end{malign}
  \end{block}
  \pause\medskip
  
  In words:
  \begin{itemize}
    \item [] The derivative of the product of two function is the first function
      times the derivative of the second function plus the second function times the derivative of the first.
  \end{itemize}
\end{frame}