Distance between directrices is 10 and eccentricity ` (1)/(sqrt(5))` .

Find the equation of ellipse in standard form if,: Distance between directrices is 18 and eccentricity is 1/3 .

Find the equation of the ellipse whose centre is at origin, the distance between foci is 2 and eccentricity is (1)/(sqrt(2)) .

Find the equation of the ellipse whose centre is at origin, the distance between foci is 2 and eccentricity is (1)/(sqrt(2)) .

Distance between foci = 10 and eccentricity = 3/2

Distance between foci is 6 and eccentricity is 3/5

Equation of a hyperbola such that the distance between the foci is 16 and eccentricity is sqrt(2) is

Find the equation of ellipse in standard form if,: Distance between directrices is 10 and passes through the point (-sqrt5,2)

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

Distance between directrices = (25)/(2) , minor axis = 6

If the distance between foci of a hyperbola is twice the distance between its directrices, then the eccentricity of conjugate hyperbola is :