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added comment for WolframAlpha input

This commit is contained in:
Martin Thoma 2012-09-05 19:51:26 +02:00
parent 21578e8a18
commit b18051eb38

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@ -42,6 +42,8 @@
%xticklabels={,,},
%yticklabels={,,}
]
% if you want to use Wolfram|Alpha:
% Plot3D[x*x-4*x*y+y*y+1, {x, -5, 5}, {y, -5, 5}]
\addplot3[surf] {x*x-4*x*y+y*y+1};
\end{axis}
\end{tikzpicture}