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NDA2011MathematicsEllipseActual

What is the sum of the focal distances of a point of an ellipse x^2 a^2 + y^2 b^2 =1 ?

Options

  1. Aa
  2. Bb
  3. C2 a
  4. D2 b

Correct answer

C. 2 a

Step-by-step solution

The correct answer is option (C).

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