File talk:Exemple fonction continue.png

Code LaTeX :

\psset{arrowscale=2}
\begin{pspicture}(-.5,-.5)(5,5)
  \psframe[fillstyle=solid,fillcolor=green,linestyle=none](0,3)(5,4)
  \psframe[fillstyle=solid,fillcolor=yellow,linestyle=none](1.5,0)(2.5,3)
  \psframe[fillstyle=vlines,hatchcolor=yellow,linestyle=none,hatchwidth=2pt,hatchsep=2pt](1.5,3)(2.5,4)
  \psaxes{->}(0,0)(-.5,-.5)(5,5)
  \uput{.25}[135](5,0){$x$}
  \uput{.25}[-45](0,5){$y$}
  \psline[linecolor=blue,linestyle=dashed](2,0)(2,3.5)
  \psline[linecolor=blue,linestyle=dashed](0,3.5)(5,3.5)
  \pscurve[linecolor=red]{*-*}(0,4.5)(2,3.5)(3.5,2)(4.5,0)
  \psline{<->}(3,3)(3,4)
  \uput{.20}[0](3,3.2){$f(2)-\varepsilon$}
  \uput{.20}[0](3,3.8){$f(2)+\varepsilon$}
  \psline{<->}(1.5,.5)(2.5,.5)
  \uput{.20}[90](1.7,1){\rput{90}{$2-\eta$}}
  \uput{.20}[90](2.3,1){\rput{90}{$2+\eta$}}
\end{pspicture}

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