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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

Paragraph: **** Let f(x) = ax^2 + bx + c, a 0 , such that f(-1-x) = f(-1+x) x R . Also given that f(x) = 0 has no real roots and 4a + b > 0 . The smaller root ( ) lie in the interval :

Options

  1. A(4, 7)
  2. B(7, 10)
  3. C(10, 13)
  4. DNone of these

Correct answer

A. (4, 7)

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