NDA 2021 Mathematics question
Consider the following with regard to eccentricity of a conic section : 1. for circle 2. for parabola 3. for ellipse Which of the above are correct?
Answer: (D)
Solution
A conic is the locus of a point whose distance from a fixed point (focus) bears a constant ratio to its distance from a fixed line (directrix). For a parabola ; for an ellipse ; for
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