\( z=\frac{2i}{-\sqrt{2}+\sqrt{2}i}=\frac{2i}{\sqrt{2}i-\sqrt{2}}=\frac{2i}{\sqrt{2}(i-1)}=\frac{\sqrt{2}i}{(i-1)} \) Erweitern mit \((-i-1)\)
\( z=\frac{\sqrt{2}i(-i-1)}{(i-1)(-i-1)}=\frac{\sqrt{2}-\sqrt{2}i}{2}=\frac{1}{2}\sqrt{2}-\frac{1}{2}\sqrt{2}i \)