The order of differential equation of all circles of given radius 'a' is

What is the order of the differential equation of all circles of given radius a ?

The order of differential equation of all circles with radius 'a' is.

The order of the differential equation of all circles whose radius is 4, is ...... .

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

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

Obtain the differential equation of all circles of radius r.

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)