TeX Quellcode:

5e^{i \, \frac{\pi}{10}} \; \cdot \; 12 e^{i \, \frac{\pi}{8}} \; = \; 5 \cdot 12 \, e^{i \, \left(\frac{\pi}{10}+\frac{\pi}{8}\right)} \; = \; 60 e^{i \, \frac{9 \pi}{40}}