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Black Book Advanced Problems in MathematicsMathematicsContinuity and Differentiability

If f(x) = (x^2 - 4[x]); 0 < x < 1 , (where [ ] denotes greatest integer function) then f' ( 2 ) is equal to :

Options

  1. A- 2
  2. B2
  3. C0
  4. D4

Correct answer

A. - 2

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