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New plot help.

    1: \label{Authoring_Dynamic_Plot_Curve_Function}
    2: 
    3: The \textbf{function} tag allows you to specify the curve to be 
    4: plotted as a formula, instead of numerical data.
    5: 
    6: The function must be a mathematical expression/
    7: Use the independent variable ``x'' for cartesian plots and ``t'' for polar 
    8: plots.
    9: Implicit multiplication is not accepted by Gnuplot.
   10: The following are examples of valid functions and invalid functions:
   11: 
   12: \begin{itemize}
   13: \item \texttt{sin(x)}
   14: \item \texttt{sin(2*x)}
   15: \item \texttt{sin(x**2)}
   16: \item \texttt{exp(x)}
   17: \item \texttt{3*x**x}
   18: \item \texttt{exp(sin(2*x))}
   19: \item \texttt{sinh(x)}
   20: \item \texttt{sin(t)*cos(t)} \textit{polar plot}
   21: \end{itemize}
   22: