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Some documentation

\label{Maxima_Argument_Array}
Mathresponse maintains two arrays:
\begin{itemize}
\item RESPONSE: the entries that the student provided
\item LONCAPALIST: the contents of a Perl variable or array passed in the ``Argument Array'' field
\end{itemize}
For example, to check if the student answer is the derivative of the argument list passed:
\begin{verbatim}
<script type="loncapa/perl">@vector=('x^2','x^3');</script>
<mathresponse answerdisplay="$example" cas="maxima" args="@vector" id="11">
    <answer>
diffx:trigsimp(trigreduce(RESPONSE[1]-diff(LONCAPALIST[1],x,1)));
diffy:trigsimp(trigreduce(RESPONSE[2]-diff(LONCAPALIST[2],x,1)));
is (diffx=0 and diffy=0);
    </answer>
    <textline readonly="no" size="50" />
</mathresponse>
\end{verbatim}
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