If α and β are different complex numbers with |β| = l, then | - 1- | is

Mathematics · JEE Advanced · NTA ExamsComplex Numbers and Quadratic Equations

If α and β are different complex numbers with |β| = l, then \(\left|\frac{\beta-\alpha}{1-\bar{\alpha} \beta}\right|\) is
  1. \(0\)
  2. \(1\)
  3. \(|\alpha|\)
  4. \(2\)

Answer

(B) 1

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