The differential equation of all circles whose radius is 5 centre is any point (h,k) is

Obtain the differential equation of all circles of radius r.

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

Form the differential equation of all the circles whose centre is at origin.

Obtain the differential equation of all circles of radius rdot

The order of differential equation of all circles with radius 'a' 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 general solution of the differential equation of all circles having centre at A(-1,2) is

The differenital equation of all circles whose centres are at the origin is

The differential equation of family of circles whose centre lies on x-axis, is