Bonjour
KLovht
[tex]a)\ \overrightarrow{v}=-2\overrightarrow{u}\Longrightarrow\boxed{k=-2}\\\\b)\ \overrightarrow{v}=\dfrac{4}{3}\overrightarrow{u}\Longrightarrow\boxed{k=\dfrac{4}{3}}\\\\c)\ \overrightarrow{v}=\dfrac{3}{2}\overrightarrow{u}\Longrightarrow\boxed{k=\dfrac{3}{2}}\\\\d)\ \overrightarrow{v}=\dfrac{3}{2}\overrightarrow{u}\Longrightarrow\boxed{k=\dfrac{3}{2}}[/tex]
