જો $\omega$ એ એકમનું સંકર ઘનમૂળ હોય,તો કોઈપણ $n>1$ માટે,$\sum_{r=1}^{n-1} r(r+1-\omega)(r+1-\omega^2) =$

  • A
    $\frac{n^2(n+1)^2}{4}$
  • B
    $\frac{n(n+1)(2n+1)}{6}$
  • C
    $\frac{n(n-1)}{4}(n^2+3n+4)$
  • D
    $\frac{n(n+1)(2n+1)}{4}$

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Similar Questions

જો $z = \frac{\sqrt{3} + i}{2}$ હોય,તો $z^{69}$ ની કિંમત શું થાય?

${\left( {\frac{{1 + \sin \theta + i\cos \theta }}{{1 + \sin \theta - i\cos \theta }}} \right)^n} = $

જો $r = 1, 2, 3, \ldots$ માટે $Z_r = \cos \left(\frac{\pi}{2^r}\right) + i \sin \left(\frac{\pi}{2^r}\right)$ હોય,તો $Z_1 Z_2 Z_3 \ldots \infty$ ની કિંમત શોધો.

બે એવી સંખ્યાઓ કે જેમાં દરેક એકબીજાનો વર્ગ હોય,તે છે:

$(1+\sqrt{5}+i \sqrt{10-2 \sqrt{5}})^5=$

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