TeX Quellcode:

\vec{a} \times \vec{b} = \begin{pmatrix}a_1\cr a_2\cr a_3\end{pmatrix} \times \begin{pmatrix}b_1\cr b_2\cr b_3\end{pmatrix} = \begin{pmatrix}a_2b_3-a_3b_2 \cr a_3b_1-a_1b_3 \cr a_1b_2 - a_2b_1\end{pmatrix}