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Exercice 39

Trouver $m$ tel que les droites

\begin{displaymath}\left\lbrace \begin{array}{l} x=\displaystyle\frac{z}{m\strut}+m \\ y=-2z+3-m \end{array} \right.\end{displaymath}

et

\begin{displaymath}\left\lbrace \begin{array}{l} x=\displaystyle\frac{-z}{2m\... ...\ y=-\displaystyle\frac{z\strut}{2}-m+3 \end{array} \right.\end{displaymath}

soient coplanaires.
Thème(s) : Géométrie
Non corrigé.