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The eccentricity of an ellipse with its ...

The eccentricity of an ellipse with its centre at the origin is `(1)/(2) ` . If one of the directrices is x = 4 , then the equation of ellipse is

A

`4x^2+3y^2=12`

B

`3x^2+4y^2=12`

C

`3x^2+4y^2=1`

D

`4x^2+3y^2=1`

Text Solution

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The correct Answer is:
B
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