The eccentricity of an ellipse, with its center at the origin is 1/3. | NIMCET 2022 |Impetus Gurukul
Channel: IMPETUS GURUKUL
Date: 2023-02-16

The eccentricity of an ellipse, with its center at the origin is 1/3. If one of the directrices is x=9, then the equation of ellipse is:
(a) 9x^2+8y^2=72 (b) 8x^2+9y^2=72
(c) 8x^2+7y^2=56 (d) 7x^2+8y^2=56
Ans: b

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