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Black Book Advanced Problems in MathematicsMathematicsApplication of Derivatives

**Paragraph for Question Nos. 1 to 2** Let y = f(x) such that xy = x + y + 1 , x R - 1 and g(x) = x f(x) There exists two values of x , x₁ and x₂ where g'(x) = 1 2 , then |x₁| + |x₂| =

Options

  1. A1
  2. B2
  3. C4
  4. D5

Correct answer

C. 4

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