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The eccentricity of an ellipse whose cen...

The eccentricity of an ellipse whose centre is at the origin is `1/2dot` if one of its directrices is `x=-4,` then the equation of the normal to it at `(1,3/2)` is: `4x+2y=7` (2) `x+2y=4` (3) `2y-x=2` (4) `4x-2y=1`

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