360 \frametitle{Review Problem}

   361 \begin{enumerate}

   362 \item Plot x, -x, sin(x), xsin(x) in the range $-5\pi$ to $5\pi$

   363 \item Add a legend

   364 \item Annotate the origin

   365 \item Set axis limits to the range of x

   366 \end{enumerate}

   367 \begin{lstlisting}

   368 In []: x=linspace(-5*pi, 5*pi, 501)

   369 In []: plot(x, x, 'b')

   370 In []: plot(x, -x, 'b')

   371 \end{lstlisting}

   372 $\vdots$

   373 \end{frame}

   374 

   375 \begin{frame}[fragile]

   376 \frametitle{Review Problem \ldots}

   377 \small{

   378 \begin{lstlisting}

   379 In []: plot(x, sin(x), 'g', linewidth=2)

   380 In []: plot(x, x*sin(x), 'r', linewidth=3)

   381 \end{lstlisting}

   382 

   383 \begin{lstlisting}

   384 In []: legend(['x', '-x', 'sin(x)', 'xsin(x)'])

   385 In []: annotate('origin', 

   386                  xy=(0, 0), 

   387                  xytext=(0, -7),

   388                  arrowprops=dict(

   389                  shrink=0.05))

   390 In []: xlim(5*pi, 5*pi)

   391 In []: ylim(5*pi, 5*pi)

   392 \end{lstlisting}

   393 }

   394 \end{frame}

   395 

   396 \begin{frame}[fragile]