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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

The equation e^ x - e^ - x - 4 = 0 has

Options

  1. Ainfinite number of real roots
  2. Bno real root
  3. Cexactly one real root
  4. Dexactly four real roots.

Correct answer

B. no real root

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