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Question 1
The values of 
for which the line 
touches the ellipse 
are
for which the line touches the ellipse are
Question 2
The equation of the ellipse, with axes parallel to the coordinate axes, whose eccentricity is 
and foci are at 
and 
, is
and foci are at and , is
Question 3
The radius of the circle passing through the foci of the ellipse 
and having its centre at 
, is
and having its centre at , is
Question 4
The ellipse 
and the straight-line 
intersect in real points only if:
and the straight-line intersect in real points only if:
Question 5
The eccentricity of the ellipse 
is:
is:
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CDS & DefenceMathematicsAug 28CDS & Defence
