Bonjour Bibigarnier
Exercice 25
[tex]d_1\Longrightarrow\ \overrightarrow{b}\ \ et\ \ \overrightarrow{w}\\\\d_2\Longrightarrow \overrightarrow{u}\\\\d_3\Longrightarrow \overrightarrow{c}\\\\d_4\Longrightarrow \overrightarrow{a}\ \ et\ \ \overrightarrow{v}[/tex]
Exercice 26
[tex]\begin{array}{|c|c|} Droite&Vecteur\ directeur \\ d_5&\overrightarrow{a}(9;3)\\ d_3&\overrightarrow{b}(-4;-6)\\ d_4&\overrightarrow{c}(-2;-6)\\ d_1&\overrightarrow{u}(-8;2)\\ d_6&\overrightarrow{v}(1;0)\\ d_2&\overrightarrow{w}(-5;5)\\ \end{array}[/tex]
Exercice 28
[tex]\begin{array}{|c|c|c|c|c|c|c|c|} &d_1&d_2&d_3&d_4&d_5&d_6&d_7 \\ d_1&X&&&X&X&&\\d_2&&X&X&&&&\\d_3&&X&X&&&&\\d_4&X&&&X&&&\\d_5&X&&&&X&&\\d_6&&&&&&X&X\\d_7&&&&&&X&X\\ \end{array}[/tex]
