3 \usepackage{../graphics}

     3 \usepackage{../graphics}

     4 

     4 

     5 \begin{document}

     5 \begin{document}

     6 

     6 

     7 \section*{Homework 9}

     7 \section*{Homework 9}

     8 

    10 

     9 \begin{enumerate}

    11 \begin{enumerate}

    10 \item Describe what is meant by \emph{eliminating tail

    12 \item Describe what is meant by \emph{eliminating tail

    11       recursion}, when such an optimization can be applied and

    13       recursion}, when such an optimization can be applied and

    12       why it is a benefit?

    14       why it is a benefit?