Mathematics · 2015
JEE Main · 11 April 2015, Shift 1 · Q82
Let PQ be a double ordinate of the parabola, y^2=-4 x, where P lies in the second quadrant. If R divides PQ in the ratio 2: 1, then the locus of R is:
Let PQ be a double ordinate of the parabola, $\displaystyle y^2=-4 x$, where P lies in the second quadrant. If R divides PQ in the ratio $\displaystyle 2$ : $\displaystyle 1$, then the locus of R is :
Official answer
(2)
$\displaystyle 9 y^2=-4 x$
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