\begin{exercice}
       Ci-dessous, on a représenté les fonctions $\cos$, $\sin$, $-\cos$ et $-\sin$. Leurs courbes respectives sont :
      \begin{ChoixQCM}{4}
\item $\Psi$, $\Gamma$, $\Phi$ et $\Lambda$
\item $\Psi$, $\Gamma$, $\Lambda$ et $\Phi$
\item $\Gamma$, $\Psi$, $\Lambda$ et $\Phi$
\item $\Lambda$, $\Phi$, $\Psi$ et $\Gamma$
        \end{ChoixQCM}\vspace{-5mm}
    \begin{center}
\psset{xtrigLabels, trigLabelBase=2,xunit=.92cm,yunit=.92cm,algebraic=true,dimen=middle,dotstyle=o,dotsize=3pt 0,linewidth=0.8pt,arrowsize=3pt 2,arrowinset=0.25}
\begin{pspicture*}(-7.5,-1.2)(7.5,1.4)
\psgrid[xunit=1.445132621cm,subgriddiv=1,gridcolor=A3, gridlabels=0pt](0,0)(-6,-2)(6,2)
\psplot[linestyle=solid,linewidth=0.8pt,linecolor=red,plotpoints=5000]{-8}{8}{cos(x)}
\psplot[linestyle=solid,linewidth=0.8pt,linecolor=green!60!black,plotpoints=5000]{-8}{8}{sin(x)}
\psplot[linestyle=solid,linewidth=0.8pt,linecolor=orange,plotpoints=5000]{-8}{8}{-cos(x)}
\psplot[linestyle=solid,linewidth=0.8pt,linecolor=blue!60!black,plotpoints=5000]{-8}{8}{-sin(x)}
\psaxes[xunit=1.445132621cm,labelFontSize=\normalsize,xAxis=true,yAxis=true,Dx=1.,Dy=1,ticksize=-2pt]{->}(0,0)(-5.02,-1.2)(4.78,1.4)
\uput[u](1.37,0.9){\textcolor{green!60!black}{$\Gamma$}} \uput[u](2.94,0.9){\textcolor{orange}{$\Lambda$}}
\uput[u](4.51,0.9){\textcolor{blue!60!black}{$\Phi$}} \uput[u](6.08,0.9){\textcolor{red}{$\Psi$}}
\end{pspicture*}
\end{center}
             \begin{corrige}
      \reponseQCM{b}
    \end{corrige}
    \end{exercice}

