The order of the differential equation of all circle of radius r, having centre on y-axis and passing through the origin, is

What is the order of the differential equation of all circles of radius r having centre on y-axis and passing through the origin ?

The order, degree of the differential equation of all circles of radius r, having centre on y-axis passing through the origin is (where r is arbitrary constant)

Form the differential equation of the family of circles having centre on the x-axis and passing through the origin .

Equation of circle of radius 5, centred on X -axis and passing through origin , is

Equation of circle of redius 5 , centred on Y-axis and passing throught origin , is

The differential equation corresponding to the family of circles having centres on X-axis and passing through the origin is

Equation of the circle with centre on the y-axis and passing through the origin and (2, 3) is

Equation of the circle with centre on the y-axis and passing through the origin and (2,3) is