Q32 / 60 · IAT (IISER) 2022 · Mathematics

Let $\omega$ be a complex root of the quadratic polynomial $x^2+x+1$. The value of
$\left(\omega+\frac{1}{\omega}\right) \cdot\left(\omega^2+\frac{1}{\omega^2}\right) \cdots\left(\omega^{100}+\frac{1}{\omega^{100}}\right)$ is

  • A
    $-2^{31}$
  • B
    $2^{33}$
  • Correct answer
    C
    $-2^{33}$
  • D
    $2^{31}$

Hence, the correct answer is option: 'C'.

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