The eccentricity of an ellipse whose centre is at the \( \mathrm{P}...

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The eccentricity of an ellipse whose centre is at the
\( \mathrm{P} \) origin is \( \frac{1}{2} \). If one of its directrix is \( x=-4 \), then the

W equation of the normal to it at \( \left(1, \frac{3}{2}\right) \) is:
(1) \( 2 y-x=2 \)
(2) \( 4 x-2 y=1 \)
(3) \( 4 x+2 y=7 \)
(4) \( x+2 y=4 \)
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