TeX Quellcode:

{z_1 \; = \; \sqrt[4]{\dfrac{1}{256}} \, \left(\cos\left(\dfrac{\frac{8\pi}{5}+2 \cdot 1 \cdot \pi}{4}\right)+i \sin\left(\dfrac{\frac{8\pi}{5}+2 \cdot 1 \cdot \pi}{4}\right) \right) \; = \; \dfrac{1}{4} \, \left(\cos\left(\dfrac{9\pi}{10}\right)+i \sin\left(\dfrac{9\pi}{10}\right)\right)}