The differential equation of the family of circles of fixed radius `r` and having their centres on `y`-axis is:

The differential equation of the family of circles of fixed radius r and having their centre on y-axis is

The differential equation of family of circles of fixed radius r and having their centres on y-axis is

The order and degree of the differential equation of the family of circles of fixed radius r with centres on the y-axis, are respectively a) 2,2 b) 2,3 c) 1,1 d) 1,2

(i) Find the differential equation of the family of circles of fixed radius r with centres on the X-axis. (ii) Form the differential equation representing all the tangents to the prabola y^(2) = 2x .

The differential equation of the family of circles with fixed radius 5 units and centre on the line y=2 is

The differential equation of the family of circles with fixed radius 5 units and centre on the line y=2 is

The differential equation of family of circles of fixed radius 5 units and centre on the line y = 2 is