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$$$\frac{1}{\left|{t}\right|}\cdot \left\langle t, 0\right\rangle$$$
Votre saisie
Calculer $$$\frac{1}{\left|{t}\right|}\cdot \left\langle t, 0\right\rangle$$$.
Solution
Multipliez chaque coordonnée du vecteur par le scalaire :
$$${\color{Chocolate}\left(\frac{1}{\left|{t}\right|}\right)}\cdot \left\langle t, 0\right\rangle = \left\langle {\color{Chocolate}\left(\frac{1}{\left|{t}\right|}\right)}\cdot \left(t\right), {\color{Chocolate}\left(\frac{1}{\left|{t}\right|}\right)}\cdot \left(0\right)\right\rangle = \left\langle \frac{t}{\left|{t}\right|}, 0\right\rangle$$$
Réponse
$$$\frac{1}{\left|{t}\right|}\cdot \left\langle t, 0\right\rangle = \left\langle \frac{t}{\left|{t}\right|}, 0\right\rangle$$$A
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