જો $Z = r(\cos \theta + i \sin \theta), (\theta \neq -\pi / 2)$ એ $x^3 = i$ નો ઉકેલ હોય,તો $r^9(\cos \theta + i \sin \theta)^9 = $

  • A
    $\frac{\sqrt{3}}{2} + \frac{1}{2} i$
  • B
    $1$
  • C
    $-i$
  • D
    $\frac{-\sqrt{3}}{2} + \frac{1}{2} i$

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જો $1$ નું ઘનમૂળ $\omega$ હોય,તો $(3 + \omega + 3\omega^2)^4$ ની કિંમત શોધો.

જો $\alpha$ એ $z^2-z+1=0$ નું બીજ હોય,તો $\left(\alpha^{2014}+\frac{1}{\alpha^{2014}}\right)+\left(\alpha^{2015}+\frac{1}{\alpha^{2015}}\right)^2+\left(\alpha^{2016}+\frac{1}{\alpha^{2016}}\right)^3+\left(\alpha^{2017}+\frac{1}{\alpha^{2017}}\right)^4+\left(\alpha^{2018}+\frac{1}{\alpha^{2018}}\right)^5=$

$(-8-8 \sqrt{3} i)^{1/4}$ ના બે મૂલ્યો કયા છે?

જો $\alpha, \beta, \gamma$ એ સમીકરણ $x^3 + 27 = 0$ ના બીજ હોય,તો તેવું દ્વિઘાત સમીકરણ મેળવો જેના બીજ $\left( \frac{\gamma}{\alpha} \right)^2$ અને $\left( \frac{\beta}{\alpha} \right)^2$ હોય.

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