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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

The number of integral values of k for which the inequality x^2 - 2(4k - 1)x + 15k^2 - 2k - 7 0 holds for all x R is:

Options

  1. A2
  2. B3
  3. C4
  4. Dinfinite.

Correct answer

B. 3

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