The previous ODE is an example of a quasi-homogeneous differential equation. An ODE y = f(x, y) is quasi-homogeneous if for any 0 and some a, b #0, ƒ(Aªx, Xy) = X-ª f(x, y). Prove that if an ODE is homogeneous, then it is quasi-homogeneous. To solve a quasi-homogeneous ODE, we need the substitution y = it into a separable ODE. Prove this fact. vrb/a to turn