" The differential equation of "x^(2)+y^(2)=a^(2)" is "

The differential equation of x^2+y^2=2Ax is

If a is arbitrary constant, find the differential equation of x^2+y^2=a^2

If a is arbitrary constant, find the differential equation of x^2+y^2=a^2

The order of the differential equation 2x^(2) (d^(2)y)/dx^(2) - 3 dy/dx + y =0 is

The curve that satisfies the differential equation y'=(x^(2) + y^2)/(2xy) and passes through (2,1) is a hyperbola with eccentricity :

The solution of the differential equation (x^(2)+y^(2))dx = 2xy dy is