Algebrický a goniometrický tvar komplexného čísla

9000037409

Časť: 
B
Vyjadrite v goniometrickom tvare dané komplexné číslo \[\frac{1} {\cos \frac{7\pi } {6} +\mathrm{i}\sin \frac{7\pi } {6} }.\]
\(\cos \frac{5\pi } {6} + \mathrm{i}\sin \frac{5\pi } {6}\)
\(\cos \left (-\frac{5\pi } {6}\right ) + \mathrm{i}\sin \left (-\frac{5\pi } {6}\right )\)
\(\cos \frac{\pi }{6} + \mathrm{i}\sin \frac{\pi }{6}\)
\(\cos \left (-\frac{\pi }{6}\right ) + \mathrm{i}\sin \left (-\frac{\pi }{6}\right )\)

9000038609

Časť: 
B
Vyjadrite v algebraickom tvare dané komplexné číslo. \[ 5\left (\cos \frac{3\pi } {4} + \mathrm{i}\sin \frac{3\pi } {4}\right ) \]
\(-\frac{5\sqrt{2}} {2} + \mathrm{i}\frac{5\sqrt{2}} {2} \)
\(\frac{5\sqrt{2}} {2} -\mathrm{i}\frac{5\sqrt{2}} {2} \)
\(\frac{5} {2} + \mathrm{i}\frac{5} {2}\)
\(\frac{5} {2} -\mathrm{i}\frac{5} {2}\)

9000037502

Časť: 
A
Určte súčet komplexných čísel \(a\), \(b\) a \(c\). \[ a = 3 + \sqrt{2}\mathrm{i},\quad b = 1 - 4\mathrm{i},\quad c = \sqrt{3} - 3\mathrm{i} \]
\(4 + \sqrt{3} + \mathrm{i}(\sqrt{2} - 7)\)
\(4 + \mathrm{i}\sqrt{3}\)
\(4 + \sqrt{2} + \mathrm{i}(\sqrt{3} - 3)\)
\(4 + \sqrt{3} -\mathrm{i}(\sqrt{2} - 7)\)

9000037506

Časť: 
A
Sú dané komplexné čísla \[ a = 3 + 5\mathrm{i}\text{, }\quad b = 2 -\mathrm{i}\text{.} \] Určte podiel \(\frac{a} {b}\).
\(\frac{1} {5} + \mathrm{i}\frac{13} {5} \)
\(\frac{1} {3} + \mathrm{i}\frac{13} {3} \)
\(\frac{1} {5} + \mathrm{i}\frac{7} {5}\)
\(\frac{1} {3} + \mathrm{i}\frac{7} {3}\)

9000037507

Časť: 
A
Sú dané komplexné čísla \[ a = \sqrt{3} + 2\mathrm{i}\text{, }\quad b = \sqrt{2} -\mathrm{i}\text{.} \] Určte podiel \(\frac{a} {b}\).
\(\frac{\sqrt{6}-2} {3} + \mathrm{i}\frac{2\sqrt{2}+\sqrt{3}} {3} \)
\(\frac{\sqrt{6}-2} {3} -\mathrm{i}\frac{2\sqrt{2}+\sqrt{3}} {3} \)
\(\frac{\sqrt{6}-3} {2} + \mathrm{i}\frac{2\sqrt{2}+\sqrt{3}} {2} \)
\(\frac{\sqrt{6}-2} {2} -\mathrm{i}\frac{2\sqrt{2}+\sqrt{3}} {2} \)