The differential equation of family of curves `x^(2)+y^(2)-2ax=0`, is

The differential equation of family of curves x^(2) + y^(2) - 2ay = 0 where 'a' is arbitrary constant is

The differential equation for the family of curve x^(2)+y^(2)-2ay=0, where a is an arbitrary constant,is

The differential equation for the family of curves x^(2)-y^(2)-2ay=0 , where a is an arbitrary constant, is

The differential equation of the family of curves of x^(2)+y^(2)-2ay=0 where a is arbitary constant, is

The differential equation of the family of curves of x^(2)+y^(2)-2ay=0 where a is arbitary constant, is

Find the differential equation of the family of curves Ax^(2)+By^(2)=1.