TeX Quellcode:

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