For equation of the curve whose subnormal is constant, then (a) its eccentricity is 1 (b) its eccentricity is `sqrt(2)` (c) its axis is the x-axis (d)its axis is the y-axis.

If the latus rectum of an ellipse is equal to half of minor axis, then its eccentricity is

Find the equation of the hyperbola whose centre is at the origin, transverse axis along x axis, eccentricity is sqrt5 and the sum of whose semi-axes is 9.

Find the eccentricity of the ellipse of which the major axis is double the minor axis.

If equation of ellipse is (3x-9)^2+9y^2=(x+sqrt(2)y+1)^2 then (1) Its eccentricity is 1/(sqrt(3)) (2) Its eccentricity is 1/(sqrt(2)) (3) Length of major axis is 4' (4) Length of minor axis is 4'

If the minor axis of an ellipse is equal to the distance between its foci, prove that its eccentricity is 1/sqrt(2) .

The major axis of an ellipse is twice its minor axis. Find its eccentricity.

If the latus rectum of an ellipse is equal to half of the minor axis, then what is its eccentricity ?

If the length of the major axis of an ellipse in 3 times the length of minor axis , then its eccentricity is

Find the locus of the point such that its distance from the x-axis is half its distance from the y-axis.

The latus rectum of an ellipse is half of its minor axis. Its eccentricity is :