Ursala/doc/pics/drum.tex

\begin{tabular}{ccc}
\toprule
quadrant & \verb|+| & \verb|-|\\
\midrule
\mbox{}\\[-13pt]
\verb|e+| $/$ \verb|n-| &
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\hspace{-15pt}\mbox{}&
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\\[-30pt]
\verb|n+| $/$ \verb|w-| &
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\hspace{-15pt}\mbox{}&
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\end{array}$
\\[-30pt]
\verb|w+| $/$ \verb|s-| &
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% front edges
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\end{array}$
\hspace{-15pt}\mbox{}&
$\begin{array}[c]{c}
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% rear edges
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\psline[linestyle=dotted,linewidth=0.9pt,linecolor=black,fillstyle=none]{-}(120.19, 51.70)( 57.88, 76.43)
\psline[linestyle=dotted,linewidth=0.9pt,linecolor=black,fillstyle=none]{-}( 57.88, 76.43)( 56.92,115.16)
% side edges
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\psline[linestyle=dotted,linewidth=0.9pt,linecolor=black,fillstyle=none]{-}(127.50, 93.69)( 56.92,115.16)
% x axis
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\put(123.15, 47.43){\begin{rotate}{-55.246}\makebox(0,0)[lt]{\scalebox{0.797}{}}\end{rotate}}
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\put(117.18,  7.26){\begin{rotate}{0.000}\makebox(0,0)[lt]{}\end{rotate}}
% y axis
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\put( 59.02,119.81){\begin{rotate}{65.718}\makebox(0,0)[lb]{\scalebox{0.777}{}}\end{rotate}}
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\put(101.39,132.25){\begin{rotate}{0.000}\makebox(0,0)[lb]{}\end{rotate}}
% z axis
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\put(-13.09, 57.07){\begin{rotate}{0.000}\makebox(0,0)[r]{}\end{rotate}}
% surface
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\\[-30pt]
\verb|s+| $/$ \verb|e-| &
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\hspace{-15pt}\mbox{}&
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\end{picture}
\end{array}$
\\[-30pt]
\bottomrule
\end{tabular}