\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
For \(\Vect{a} = \begin{pmatrix} a_1 \\ a_2 \\ a_3 \end{pmatrix}\), prove that \(\Vect{a} \times \Vect{a}=\Vect{0}\).
Capture an image of your work. AI teacher feedback takes approximately 10 seconds.