From a variable point P on y=x-3 tangents PQ& PR are drawn to the circle x2+y2 = 4 ,
Q' & R' r the corresponding points of Q & R on the ellipse x2/4+y2=1 in the same quadrants as Q & R
The locus of the midpoint of Q' R' is an ellipse with eccentricity e & latus rectum L
The value of 1/e2L2 is ..............
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42) The length of the focal chord of the rectangular hyperbola xy=8 , which touches the circle x2+y2 = 8 is ........
ANS : 16
(I WANT SOLUTION)