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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

In above problem, the range of f(x) x [-1, 1] is:

Options

  1. A[-1, 3/5]
  2. B[-1, 5/3]
  3. C[-1/3, 1]
  4. D[-1, 1] .

Correct answer

D. [-1, 1] .

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