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

समुच्चय \(\{z=a+i b: a, b \in Z, z \in C,|z-1| \leq 1,|z-5| \leq|z-5 i|\}\) में अवयवों के मापांक के वर्ग का योग ........ है।

  1. A \(10\)
  2. B \(9\)
  3. C \(5\)
  4. D \(12\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(9\)

Step-by-step Solution

Detailed explanation

\( |z-1| \leq 1 \) \( \Rightarrow|(x-1)+i y| \leq 1 \) \( \Rightarrow \sqrt{(x-1)^2+y^2} \leq 1 \) \( \Rightarrow(x-1)^2+y^2 \leq 1 ............(1)\) Also \(|z-5| \leq|z-5 i|\) \( (x-5)^2+y^2 \leq x^2+(y-5)^2 \) \( -10 x \leq-10 y \) \( \Rightarrow x \geq y.........(2)\) Solving…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app