\begin{exercice}
Même consigne qu'à l'exercice \RefExercice{1SF4_E_asso}.

  \begin{tikzpicture}[general, scale=0.8]
   \draw [quadrillage] (-2,-4)grid (3,2);
   \axeX{-2}{3}{1}
   \axeY{-4}{2}{1}
   \origine
   \draw [domain=-2:3, color=B1, smooth] plot(\x,{\x-1});
   \draw (1.5,1.5) [color=B1] node{{\boldmath $\mathcal{C}_1$}};
   \draw [domain=-1.91:2.98, color=D1, smooth] plot(\x,{(3*(\x)^4-4*(\x)^3-12*(\x)^2)/12});
   \draw (1.5,-2.5) [color=D1] node{{\boldmath $\mathcal{C}_3$}};
   \draw [domain=-0.83:3, color=G1, smooth] plot(\x,{((\x)^2-4*(\x))/2});
   \draw (0.5,-1.5) [color=G1] node{{\boldmath $\mathcal{C}_2$}};
  \end{tikzpicture}
   \begin{tikzpicture}[general, scale=0.8]
   \draw [quadrillage] (-2,-3)grid (3,3);
   \axeX{-2}{3}{1}
   \axeY{-3}{3}{1}
   \origine
   \draw [domain=-2:3, color=J1, smooth] plot(\x,{1});
   \draw (1.5,1.5) [color=J1] node{{\boldmath $\Gamma_2$}};
   \draw [domain=-1.55:2.37, color=H1, smooth] plot(\x,{(\x+1)*(\x-2)*\x});
   \draw (1.5,-2.5) [color=H1] node{{\boldmath $\Gamma_3$}};
   \draw [domain=-1:3, color=F1, smooth] plot(\x,{\x-2});
   \draw (-0.5,-1.5) [color=F1] node{{\boldmath $\Gamma_1$}};
  \end{tikzpicture}
\end{exercice}