\begin{frame}
  \frametitle{Summary of Differentiation Rules}

  \begin{block}{}
    \begin{talign}
      \frac{d}{dx}(c) \;&=\; 0 &&&
      \frac{d}{dx}(x^r) \;&=\; r\,x^{r-1} \\[2ex]
      \frac{d}{dx}(e^x) \;&=\; e^x &&&
      \frac{d}{dx}(a^x) \;&=\; \ln a \cdot a^x \\[2ex]
      (f+g)' \;&=\; f'+g' &&&
      (f-g)' \;&=\; f'-g' \\[2ex]
      (cf)' \;&=\; cf' \\[2ex]
      (fg)' \;&=\; f'g + fg' &&&
      \left(\frac{f}{g}\right)' \;&=\; \frac{f'g - fg'}{g^2} \\[2ex]
      (f\circ g)'(x) \;&=\; f'(g(x)) \cdot g'(x)
    \end{talign}
  \end{block}
\end{frame}