TeX Quellcode:

\vec{a}^{\,T} \cdot \vec{b} = -\dfrac{5}{8} \cdot \dfrac{4}{5} \cdot 24 + \left(-13\right) \cdot \dfrac{4}{5} \cdot 30 + 20 \cdot \dfrac{4}{5} \cdot 7 = -212