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\begin{frame}
  \frametitle{Optimization}
  
  We now use calculus to solve practical problems.
  \pause\bigskip
  
  Challenge: convert word problems into mathematical problems
  \begin{itemize}
  \pause
    \item understand the problem
  \pause
    \item draw a diagram
  \pause
    \item introduce notation
  \pause
    \item translate the problem to the notation
  \pause
    \item use calculus to solve it
  \end{itemize}
\end{frame}