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Black Book Advanced Problems in MathematicsMathematicsApplication of Derivatives

Which of the following are correct

Options

  1. Ax^4 + 2x^2 - 6x + 2 = 0 has exactly four real solution
  2. Bx^5 + 5x + 1 = 0 has exactly three real solutions
  3. Cx^n + ax + b = 0 where n is an even natural number has atmost two real solution a, b R .
  4. Dx^3 - 3x + c = 0, c > 0 has two real solution for x (0, 1)

Correct answer

C. x^n + ax + b = 0 where n is an even natural number has atmost two real solution a, b R .

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