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Black Book Advanced Problems in MathematicsMathematicsFunctions

Let f(x) = x^2 + x + x , being an integer and is a real number. The number of ordered pairs ( , ) for which the equation f(x) = 0 and f(f(x)) = 0 have the same (non empty) set of real roots is :

Options

  1. A2
  2. B3
  3. C4
  4. D6

Correct answer

C. 4

Step-by-step solution

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