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JEE Mains · Maths · STD 11 - 4.1 complex nubers

ધારો કે \(z_1, z_2\) અને \(z_3\) એ વર્તુળ \(|z|=1\) પરની ત્રણ સંકર સંખ્યાઓ છે, કે જ્યાં \(\arg \left(z_1\right)=\frac{-\pi}{4}, \arg \left(z_2\right)=0\) અને \(\arg \left(z_3\right)=\frac{\pi}{4}\) છે. જો \(\left|z_1 \bar{z}_2+z_2 \bar{z}_3+z_3 \bar{z}_1\right|^2=\alpha+\beta \sqrt{2}, \alpha, \beta \in \mathbf{Z}\) હોય, તો \(\alpha^2+\beta^2\) ની કિંમત શોધો:

  1. A \(24\)
  2. B \(29\)
  3. C \(41\)
  4. D \(31\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(29\)

Step-by-step Solution

Detailed explanation

\begin{aligned} & |z|=1 \\ & \arg \left(z_1\right)=-\frac{\pi}{4}, \arg \left(z_2\right)=0, \arg \left(z_3\right)=\frac{\pi}{4} \\ & z_1=|1| e^{-\frac{\pi}{4}}=\frac{1}{\sqrt{2}}-\frac{i}{\sqrt{2}} \\ & z_2=1+0 i \\ & z_3=\frac{1}{\sqrt{2}}+\frac{i}{\sqrt{2}} \\ & z_1…

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