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Black Book Advanced Problems in MathematicsMathematicsApplication of Derivatives

For any real number b , let f(b) denotes the maximum of | x + 2 3 + x + b | x R . Then the minimum value of f(b) b R is :

Options

  1. A1 2
  2. B3 4
  3. C1 4
  4. D1

Correct answer

B. 3 4

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