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Black Book Advanced Problems in MathematicsMathematicsContinuity and Differentiability

Let f(x) = (x^2 - 3x + 2)(x^2 + 3x + 2) and , , satisfy < < are the roots of f'(x) = 0 then which of the following is/are correct ( [ ] denotes greatest integer function) ?

Options

  1. A[ ] = -2
  2. B[ ] = -1
  3. C[ ] = 0
  4. D[ ] = 1

Correct answer

A. [ ] = -2

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