જો $\omega_0, \omega_1, \ldots, \omega_{n-1}$ એ એકમના $n$-મા મૂળ હોય,તો $(1+2 \omega_0)(1+2 \omega_1)(1+2 \omega_2) \ldots (1+2 \omega_{n-1})=$

  • A
    $1+(-1)^n 2^n$
  • B
    $1+2^n$
  • C
    $(-1)^n+2^n$
  • D
    $1+(-1)^{n-1} 2^n$

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$\sum_{r=1}^{16}\left(\sin \frac{2 r \pi}{17}+i \cos \frac{2 r \pi}{17}\right)=$

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જો $\frac{1}{x} + x = 2\cos \theta$ હોય,તો ${x^n} + \frac{1}{{{x^n}}}$ ની કિંમત શોધો.

જો $\alpha$ અને $\beta$ એ સમીકરણ $x^2-2x+4=0$ ના બીજ હોય,તો $\alpha^9+\beta^9$ ની કિંમત શોધો.

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