\begin{exercice}Même consigne que l'exercice \RefExercice{2G4_construiresomme}.

\begin{center}
\begin{tikzpicture}[general, scale=0.5]
\draw [quadrillage] (-5,-5) grid (5,4);
\axeOI{-5}{5}
\axeOJ{-5}{4}
\origineO
\foreach \N/\x/\y in {A/-4/-4}
{\draw (\x,\y) node[below] {$\N$};
\draw (\x,\y) node { $+$};}
\draw[->, color=A1,epais] (-4,-4)--(-3,-1);
\draw[color=A1] (-3.5,-2.5) node[left] {{\boldmath $\vv u$}};
\draw[->, color=C1,epais] (5,-4)--(2,3);
\draw[color=C1] (4,-1.5) node[left] {{\boldmath $\vv v$}};
\end{tikzpicture}\end{center}
                 
\end{exercice}
