\begin{figure}
+\centering{
+\begin{minipage}{0.5\textwidth}
+\vspace{7em}
\psset{xunit=3cm,yunit=0.8cm}
\savedata{\mydata}[{{0.0, -1.25}, {0.1, -1.24}, {0.2, -1.21}, {0.3, -1.16}, {0.4, -1.0899999999999999}, {0.5, -1.0}, {0.6, -0.89}, {0.7, -0.76}, {0.8, -0.6099999999999999}, {0.9, -0.43999999999999995}, {1.0, -0.25}, {1.1, -0.039999999999999813}, {1.2, 0.18999999999999995}, {1.3, 0.44000000000000017}, {1.4, 0.7099999999999997}, {1.5, 1.0}, {1.6, 1.3100000000000005}, {1.7, 1.6399999999999997}, {1.8, 1.9900000000000002}, {1.9, 2.36}, {2.0, 2.75}, {2.1, 3.16}, {2.2, 3.5900000000000007}, {2.3, 4.039999999999999}, {2.4, 4.51}}]
\dataplot[plotstyle=curve,showpoints=true]{\mydata}
\psline{<->}(0,2)(0,-2)(0,0)(3,0)
\psline{-}(1.3125,0)(2.2,3.55)
-
-\vspace{2em}
-% \begin{pspicture}(9,9)
-% \psaxes[labels=none,ticks=none]{->}(0,0)(8,8)[$x$,0][$y$,0]
-% \pscurve(1,1)(3,4)(6,6)(8,4)
-% \pscurve[linestyle=symbol,symbolStep=11.6pt,% must be positive
-% curveticks,startAngle=60](1,1)(3,4)(6,6)(8,4)
-% \end{pspicture}
-% \begin{pspicture}(8,8)
-% \psaxes[labels=none,ticks=none]{->}(0,0)(8,8)[$x$,0][$y$,0]
-% \pscurve[linestyle=symbol,symbolStep=-20,% must be negative !
-% curveticks,startAngle=60](1,1)(3,4)(6,6)(8,4)
-% \end{pspicture}
+\vspace{5em}
+\end{minipage}
+}
\caption{Représentation graphique de méthodes itératives de construction de racine}\label{fig:graphe1}
\end{figure}
