\(\vec{w} . \vec{v} > 0\)
VRAI
FAUX
On a \(\vec{w}(1 ; -3)\) et \(\vec{v}(-2 ; 3)\).
\(\vec{w} . \vec{v} = 1 \times (-2) - 3 \times 3 = -2 - 9 = -11\)
