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JEE Mains · Maths · STD 11 - 4.1 complex nubers

सभी सम्मिश्र संख्याओं \(z\) के मापांकों के वर्गो का योगफल, जो \(\overline{ z }= iz ^2+ z ^2- z\) को संतुष्ट करता है, होगा

  1. A \(50\)
  2. B \(2\)
  3. C \(29\)
  4. D \(9\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(2\)

Step-by-step Solution

Detailed explanation

\(z +\overline{ z }=i z ^{2}+ z ^{2}\) Consider \(z=x+i y\) \(2 x=(i+1)\left(x^{2}-y^{2}+2 x y i\right)\) \(\Rightarrow 2 x=x^{2}-y^{2}-2 x y \text { and } x^{2}-y^{2}+2 x y=0\) \(\Rightarrow 2 x=-4 x y\) \(\Rightarrow x=0 \text { or } y=\frac{-1}{2}\) Case…
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