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Black Book Advanced Problems in MathematicsMathematicsContinuity and Differentiability

If f(x) = | | x| - | x| | , then f' ( 7 6 ight) =

Options

  1. A3 + 1 2
  2. B1 - 3 2
  3. C3 - 1 2
  4. D-1 - 3 2

Correct answer

C. 3 - 1 2

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