\begin{frame}
  \frametitle{Derivatives of Logarithmic Functions}

  \begin{block}{}
    \begin{malign}
      \frac{d}{dx} (\log_a x) = \frac{1}{x\ln a}
      &&
      \frac{d}{dx} (\ln x) = \frac{1}{x}
    \end{malign}
  \end{block}

  \begin{exampleblock}{}
    Differentiate
    \begin{talign}
      y = \ln(x^3 + 1)
    \end{talign}
    \pause
    We have 
    \begin{talign}
      y' = \frac{1}{x^3 + 1} \cdot 3x^2
    \end{talign}
  \end{exampleblock}
  \pause
  \begin{exampleblock}{}
    Differentiate
    \begin{talign}
      y = \ln(\sin x)
    \end{talign}
    \pause
    We have 
    \begin{talign}
      y' = \frac{1}{\sin x} \cdot \cos x \mpause[1]{ = \cot x}
    \end{talign}
  \end{exampleblock}
  \vspace{10cm}  
\end{frame}