If a tangent on ellipse at `A(1,1)` intersect its directrix at `B(7,-6)` and `S` be the focus of ellipse and `C(alpha, beta)` is the centre of `/_\SAB`, then

The focus of an ellipse is (-1, -1) and the corresponding directrix is x - y + 3 = 0 . If the eccentricity of the ellipse is 1/2, then the coordinates of the centre of the ellipse, are

At a point A(1,1) on ellipse equation of tangent is y=x. If one of the foci of ellipse is (0,-2) and the co-ordinates of centre of ellipse are (alpha,beta), then the value of alpha+beta is (Given length of major axis of ellipse is 4sqrt(10) units )

The eccentricity of an ellipse is (1)/(2) , focus is S (0,0) and the major axis and directrix intersect at Z (-1,-1) . Find the coordinates of the centre of the ellipse .

The eccentricity of an ellipse is (1)/(sqrt(3)) , the coordinates of focus is (-2,1) and the point of intersection of the major axis and the directrix is (-2,3) . Find the coordinates of the centre of the ellipse and also equation of the ellipse .

The eccentricity of an ellipse is (2)/(3) focus is S(5,4) and the major axis and directrix intersect at Z(8,7) . Find the coordinates of the centre of the ellipse .

The focus and corresponding directrix of an ellipse are (3, 4) and x+y-1=0 respectively. If the eccentricity of the ellipse is (1)/(2) , then the coordinates of the centre of the ellipse are

The focus and corresponding directrix of an ellipse are (3, 4) and x+y-1=0 respectively. If the eccentricity of the ellipse is (1)/(2) , then the coordinates of the centre of the ellipse are

If question of the ellipse whose focus is (1,-1), then directrix the line x-y-3=0 and eccentricity 1/2 is