Mathematics Differential Equations 5 Marks Appeared in: 2025 (2 sets) (a) Solve the differential equation : $x^2y \, dx - (x^3 + y^3) \, dy = 0$. OR (b) Solve the differential equation $(1 + x^2) \frac{dy}{dx} + 2xy - 4x^2 = 0$ subject to initial condition $y(0) = 0$.