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NEST2016MathematicsEllipse

For a positive real number k let E_k be the ellipse with equation x^2 a^2+k + y^2 b^2+k =1 where a b 0 . All members of the family of ellipses E_k: k 0 have the same

Options

  1. Afoci.
  2. Beccentricity.
  3. Cpair of directrices.
  4. Dcentre.

Correct answer

D. centre.

Step-by-step solution

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