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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

Let f(x) = 10 - |x - 10| x [-9, 9] , if M and m be the maximum and minimum value of f(x) respectively, then :

Options

  1. AM + m = 0
  2. B2M + m = -9
  3. C2M + m = 7
  4. DM + m = 7 .

Correct answer

A. M + m = 0

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