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\draw (1.558846,-0.278115) node[right=-2bp]{$x_2$};
\dpicdraw[dash pattern=on 0.05in off 0.05in](0,0.570634)
 --(-0,1.395255)\dpicstop
\filldraw[line width=0bp](0.02,2.215869)
 --(0,2.282536)
 --(-0.02,2.215869) --cycle\dpicstop
\dpicdraw (-0,1.411922)
 --(-0,2.272869)\dpicstop
\draw (0,2.282536) node[right=-2bp]{$v(X)$};
\draw (0,0.013837) node[below=-2bp]{${0}$};
\draw (0.935307,-0.125203) node[above=-2bp]{$\Omega$};
\draw (1.131033,-0.139875) node[above right=-2bp]{$v(X) = c$};
\end{tikzpicture}%

.
