The sum of the order and degree of the family of all circles on xy plane having radius r is

If I and m are the degree and the order respectively of the differential equation of the family of all circles in the XY plane with radius 5 units then 2l+3m=

Writhe the order of the differential equation of the family of circles of radius r.

Find the sum of order and degree of differential equation of all the conics touching the y-axis at origin and having centre on the x- axis

Obtain the differential equation of the family of circles : having radius 3 and centre on y-axis.

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

The differential equation of the family of circles of fixed radius r and having their centres on y -axis is:

The order and degree of the differential equation of the family of parabolas having vertex at origin and axis along positive x-axis is

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

Form the differential equation of the family of circles having centre on y-axis and radius 3 units.