ExamBro
ExamBro
JEE Mains · Maths · STD 11 - 4.1 complex nubers

माना \(p, q \in \mathbb{R}\) तथा \((1-\sqrt{3} i)^{200}=2^{199}(p+i q)\), \(\mathrm{i}=\sqrt{-1}\) तो \(\mathrm{p}+\mathrm{q}+\mathrm{q}^2\) तथा \(\mathrm{p}-\mathrm{q}+\mathrm{q}^2\) किस समीकरण के मूल हैं ?

  1. A \(x ^2+4 x -1=0\)
  2. B \(x^2-4 x+1=0\)
  3. C \(x^2+4 x+1=0\)
  4. D \(x ^2-4 x -1=0\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(x^2-4 x+1=0\)

Step-by-step Solution

Detailed explanation

\((1-\sqrt{3} i )^{200}=2^{199}( p + iq )\) \(2^{200}\left(\cos \frac{\pi}{3}- i \sin \frac{\pi}{3}\right)^{200}=2^{199}( p + iq )\) \(2\left(-\frac{1}{2}- i \frac{\sqrt{3}}{2}\right)= p + iq\) \(p =-1, q =-\sqrt{3}\) \(\alpha= p + q + q ^2=2-\sqrt{3}\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app