The differential equation whose solution is a circle centred at `(h,k)` and radius `a` is

The order of the differential equation of all circles with centre at (h,k) and radius 'a' is …….

The order of the differential equation of all circles with centre at (h, k) and radius 'a' is ………….

What is the differential equation whose solution is y=3x+k ?

The differential equation for all circles with centre (h,0) and radius r,h and r being arbitary constants is

Find the equation of a circle whose centre is (2, 3) and radius is 5.

Find the equation of a circle whose centre is (2, 3) and radius is 5.

Order of the differential equation of the family of all concentric circles centred at (h,k) is