TeX Quellcode:

\begin{array}{rcl}\dfrac{z_1}{z_2} &=& \dfrac{\frac{1}{2}e^{i\,\frac{5\pi}{4}}}{10e^{i\,\frac{\pi}{6}}} \\ \\ &=& \dfrac{\frac{1}{2}}{10}e^{i\,\frac{5\pi}{4}-i\,\frac{\pi}{6}} \\ \\ &=& \dfrac{1}{20}e^{i\,\frac{13\pi}{12}}\end{array}