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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 . Let = 4a - 2b + c, = 9a + 3b + c, = 9a - 3b + c , then which of the following is correct ?

Options

  1. A< <
  2. B< <
  3. C< <
  4. D< <

Correct answer

C. < <

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