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Black Book Advanced Problems in MathematicsMathematicsContinuity and Differentiability

If f(x) = |x - 1| and g(x) = f(f(f(x))) , then g'(x) is equal to :

Options

  1. A1 for x > 2
  2. B1 for 2 < x < 3
  3. C-1 for 2 < x < 3
  4. D-1 for x > 3

Correct answer

C. -1 for 2 < x < 3

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