Obtain the differential equation of all circles of radius `rdot`

Obtain the differential equation for a LC circuit.

Find the differential equation of all the circles whose radius is one unit.

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

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)

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

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