\begin{exercice}Même consigne qu'à l'exercice \RefExercice{2G3_E_reperer_produit} avec:
\begin{colitemize}{3}
\item $\vv u=\dfrac{\TopStrut 3}{\BotStrut 4}\vv{BC}$
\item $\vv v= -\dfrac{1}{2}\vv{AB}$
\item $\vv w=\dfrac{2}{5}\vv{AB}$
\end{colitemize}
\begin{center}
\begin{tikzpicture}[general, scale=1.6]
\draw [quadrillage, step=0.25] (-1.5,-1) grid (1.5,1.25);
\axeOI{-1.5}{1.5}
\axeOJ{-1}{1.25}
\origineO
\foreach \x/\y/\P/\N in {-0.25/-0.5/left/A, 0.75/0.75/right/B, 1.25/-0.75/left/C} 
{\pointGraphique{\x}{\y}{\N}{\P}}
\end{tikzpicture}
\end{center}
\end{exercice}
