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Project ID:
9000031209
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Sú dané komplexné čísla \(z_{1} = 2\sqrt{2}\left (\cos \frac{\pi }{4} + \mathrm{i}\sin \frac{\pi }{4}\right )\)
a \(z_{2} = \sqrt{2}\left (\cos \frac{7\pi }
{4} + \mathrm{i}\sin \frac{7\pi }
{4}\right )\). Určte
súčin \(z_{1}z_{2}\) v algebraickom tvaru.
\(4\)
\(4\mathrm{i}\)
\(- 4\mathrm{i}\)
\(- 4\)