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  • 2014| SET 2 - (ECE GATE Exam) - Previous Question Paper Solution
  • If the characteristic equation of the differential equati...
Multiple choice

If the characteristic equation of the differential equation $\frac{d^2 y}{dx^2} + 2 \alpha \frac{dy}{dx} + y = 0$ has two equal roots, then the values of a are

  1. $\pm$ 1
  2. 0, 0

  3. $\pm$ j
  4. $\pm$ 1/2
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