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Complex Numbers question

2022 · 29 Jul · Shift 2 · Q34
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  5. /2022 · 29 Jul · Shift 2 · Q34

Complex Numbers question

2022 · 29 Jul · Shift 2 · Q34

JEE MainMathematicsComplex NumbersMCQ+4 / −1
Let S={z=x+iy:∣z−1+i∣≥∣z∣,∣z∣<2,∣z+i∣=∣z−1∣}\mathrm{S}=\{z=x+i y:|z-1+i| \geq|z|,|z|\lt 2,|z+i|=|z-1|\}S={z=x+iy:∣z−1+i∣≥∣z∣,∣z∣<2,∣z+i∣=∣z−1∣}. Then the set of all values of xxx, for which w=2x+iy∈Sw=2 x+i y \in \mathrm{S}w=2x+iy∈S for some y∈Ry \in \mathbb{R}y∈R, is :
  1. A
    (−2,122]\left(-\sqrt{2}, \frac{1}{2 \sqrt{2}}\right](−2​,22​1​]
  2. B
    (−12,14]\left(-\frac{1}{\sqrt{2}}, \frac{1}{4}\right](−2​1​,41​]
  3. C
    (−2,12]\left(-\sqrt{2}, \frac{1}{2}\right](−2​,21​]
  4. D
    (−12,122]\left(-\frac{1}{\sqrt{2}}, \frac{1}{2 \sqrt{2}}\right](−2​1​,22​1​]
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