$\frac{(\cos \alpha + i \sin \alpha)(\cos \beta + i \sin \beta)}{(\cos \gamma + i \sin \gamma)(\cos \delta + i \sin \delta)}$ ની કિંમત શોધો.

  • A
    $\cos (\alpha + \beta - \gamma - \delta) - i \sin (\alpha + \beta - \gamma - \delta)$
  • B
    $\cos (\alpha + \beta - \gamma - \delta) + i \sin (\alpha + \beta - \gamma - \delta)$
  • C
    $\sin (\alpha + \beta - \gamma - \delta) - i \cos (\alpha + \beta - \gamma - \delta)$
  • D
    $\sin (\alpha + \beta - \gamma - \delta) + i \cos (\alpha + \beta - \gamma - \delta)$

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જો $-3+ix^2y$ અને $x^2+y+4i$ સંકર સંખ્યાઓ એકબીજાની અનુબદ્ધ (complex conjugates) હોય,તો $x=$

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અસમતા $a + ib > c + id$ ત્યારે જ અર્થપૂર્ણ બને જ્યારે:

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