The general solution of the differential equation $\frac{d y}{d x}=\sin (x-y)+\cos (x-y)$ is

The general solution of the differential equation $x^2 d y-\left(x y-y^2\right) d x=0$ is

The degree and order of the differential equation of the family of parabolas whose axis is the $X$-axis, are respectively

The general solution of the differential equation $\left(x \sin \frac{y}{x}\right) d y=\left(y \sin \frac{y}{x}-x\right) d x$ is