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

જો \(w\) \((Im\, w \neq 0)\) એ સંકર સંખ્યા હોય તો કોઈક વાસ્તવિક સંખ્યા \(k\) માટે સંકર સંખ્યા \(z\) નો ઉકેલગણ મેળવો કે જેથી \(w - \overline {w}z  = k\left( {1 - z} \right)\) થાય. 

  1. A \(\left\{ {z:\left| z \right| = 1} \right\}\)
  2. B \(\left\{ {z:z = \overline z } \right\}\)
  3. C \(\left\{ {z:z \ne 1} \right\}\)
  4. D \(\left\{ {z:\left| z \right| = 1,z \ne 1} \right\}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\left\{ {z:\left| z \right| = 1,z \ne 1} \right\}\)

Step-by-step Solution

Detailed explanation

Consider the equation \(w-\bar{w} z=k(1-z), k \in R\) Clearly \(z \neq 1\) and \(\frac{w-\bar{w} z}{1-z}\) is purely real \(\therefore \frac{\overline{w-\bar{w} z}}{1-z}=\frac{w-\bar{w} z}{1-z}\) \(\Rightarrow \frac{\bar{w}-w \bar{z}}{1-\bar{z}}=\frac{w-\bar{w} z}{1-z}\)…
Same subject
Explore more questions on app
From JEE Mains
Explore more questions on app