If the curves `(x^2)/4+y^2=1` and `(x^2)/(a^2)+y^2=1` for a suitable value of `a` cut on four concyclic points, the equation of the circle passing through these four points is `x^2+y^2=2` (b) `x^2+y^2=1` `x^2+y^2=4` (d) none of these

If the curves (x^2)/4+y^2=1 and (x^2)/(a^2)+y^2=1 for a suitable value of a cut on four concyclic points, the equation of the circle passing through these four points is (a) x^2+y^2=2 (b) x^2+y^2=1 (c) x^2+y^2=4 (d) none of these

If the curves (x ^(2))/(4) + y ^(2) = 1 and (x ^(2))/(a ^(2)) + y ^(2) =1, for suitable value of 'a', cut on four concyclic points, the equation of the circle passing through these four points is

If the curves x^(2) + 4y^(2) = 4, x^(2) + a^(2) y^(2) = a^(2) for suitable value of a cut on four concylclic points, the equation of the circle passing through the four points, is

If the curves x^(2) + 4y^(2) = 4, x^(2) + a^(2) y^(2) = a^(2) for suitable value of a cut on four concylclic points, the equation of the circle passing through the four points, is

If the curves (x^(2))/(4)+y^(2)=1 and (x^(2))/(a^(2))+y^(2)=1 for a suitable value of a cut on four concyclic points,the equation of a cut on four concyclic through these four points is x^(2)+y^(2)=2 (b) x^(2)+y^(2)=1x^(2)+y^(2)=4(d) none of these

If the line 2x+3y+1=0, 3x+2y-1=0 intersect the coordinate axes in fourc concyclic points then the equation of the circle passing through these four points is

Find the equation of the circle passing through the points of intersection of the circles x^(2)+y^(2)-8x-6y-21=0 x^(2)+y^(2)-2x-15=0and(1,2)

Find the equation of the circle through the point of intersection of circles x^2+y^2-6x=0 and x^2+y^2+4y-1=0 and the point (-1, 1).

The equation of the circle passing through (1,2) and the points of intersection of the circles x^2+y^2-8x-6y+21=0 and x^2+y^2-2x-15=0 is

The equation of the circle passing through (1,2) and the points of intersection of the circles x^2+y^2-8x-6y+21=0 and x^2+y^2-2x-15=0 is