Hallo probe,
= | \(\begin{pmatrix} -2 \\ -5 \\ 0 \end{pmatrix}\) * 1/3 * \(\begin{pmatrix} 2 \\ 1 \\ 2 \end{pmatrix}\) |
= 1/3 * | \(\begin{pmatrix} -2 \\ -5 \\ 0 \end{pmatrix}\) * \(\begin{pmatrix} 2 \\ 1 \\ 2 \end{pmatrix}\) |
= 1/3 * | -9 | = 3
Gruß Wolfgang