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Black Advanced Problems in Mathematics
Exam
Black Advanced Problems in Mathematics
Subject
Mathematics
Chapter
Quadratic Equation

Black Advanced Problems in Mathematics · Mathematics · Quadratic Equation

Let f(x) = 10 - |x - 10| x ∈ [-9, 9] , if M and m be the maximum...

Let f(x)=10−∣x−10∣∀x∈[−9,9]f(x) = 10 - |x - 10| \forall x \in [-9, 9], if M and m be the maximum and minimum value of f(x)f(x) respectively, then :

Options

  1. AM+m=0M + m = 0
  2. B2M+m=−92M + m = -9
  3. C2M+m=72M + m = 7
  4. DM+m=7M + m = 7.

Correct answer

A. M+m=0M + m = 0

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