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

यदि \(\alpha\) के न्यूनतम तथा अधिकतम वास्तविक मान, जिनके लिए समीकरण \(z +\alpha| z -1|+2 i=0( z \in C\) तथा \(i=\sqrt{-1}\) ) का हल है, क्रमश: \(p\) तथा \(q\) हैं, तो \(4\left( p ^{2}+ q ^{2}\right)\) बराबर ............... है  |

  1. A \(15\)
  2. B \(10\)
  3. C \(20\)
  4. D \(5\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(10\)

Step-by-step Solution

Detailed explanation

Put \(z=x+\) iy \(x+i y+\alpha \mid x+\) iy \(-1 \mid+2 i=0\) \(\Rightarrow \quad x+\alpha \sqrt{(x-1)^{2}+y^{2}}+i(y+2)=0+0 i\) \(\Rightarrow \quad y+2=0\) and \(x+\alpha \sqrt{(x-1)^{2}+y^{2}}=0\) \(\Rightarrow \quad y=-2\) and \(\alpha^{2}=\frac{x^{2}}{x^{2}-2 x+5}\) Now…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app