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@@ -41,13 +41,30 @@
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\draw[fill=black!25] (axis cs:-1.5,0.5) rectangle (axis cs:-1.0,1.7) node[pos=.5] {B};
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\draw[fill=white] (axis cs:-1.5,-.7) rectangle (axis cs:-1.0,0.5) node[pos=.5] {D};
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- \draw[red,thick] (axis cs:-0.5,-.5) rectangle (axis cs:1,1.5) node[pos=.5] {D};
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+ \end{axis}
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+ \begin{axis}[
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+ axis x line=middle,
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+ axis y line=middle,
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+ grid = major,
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+ grid style={dashed, gray!30},
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+ xmin=-1.25, % start the diagram at this x-coordinate
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+ xmax= 1.25, % end the diagram at this x-coordinate
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+ ymin=-0.75, % start the diagram at this y-coordinate
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+ ymax= 1.75, % end the diagram at this y-coordinate
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+ xlabel=$s$,
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+ ylabel=$t$,
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+ %xticklabels={-2,-1.6,...,7},
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+ %yticklabels={-8,-7,...,8},
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+ tick align=outside,
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+ minor tick num=-3,
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+ enlargelimits=true,
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+ tension=0.08]
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+ \draw[red,thick] (axis cs:-0.5,-.5) rectangle (axis cs:1,1.5) node[pos=.5] {};
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\node[label={180:{1}},circle,fill,inner sep=2pt] at (axis cs:-0.5,-0.5) {};
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\node[label={180:{2}},circle,fill,inner sep=2pt] at (axis cs:1,-0.5) {};
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\node[label={180:{3}},circle,fill,inner sep=2pt] at (axis cs:1,1.5) {};
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\node[label={180:{4}},circle,fill,inner sep=2pt] at (axis cs:-0.5,1.5) {};
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-
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\end{axis}
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\end{tikzpicture}
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\end{document}
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