TeX Quellcode:

\vec{a} \times \vec{b} = \begin{pmatrix}0 \cdot 0 &-& \frac{13}{2} \cdot \left(-\frac{15}{9}\right) \cr \frac{13}{2} \cdot 0 &-& \left(-\frac{11}{72}x\right) \cdot 0 \cr -\frac{11}{72}x \cdot \left(-\frac{15}{9}\right) &-& 0 \cdot 0\end{pmatrix} = \begin{pmatrix} \frac{65}{6} \cr 0 \cr \frac{55}{216}x \end{pmatrix}