tysm, please answer this ASAP

1. Solve for y of the Separable D.E. sinx dx + y dy = 0 2. Solve for y of the Exact D.E. (x2 - y) dx - xdy = 0 3. Solve for y of the Homogeneous D.E 2y+x _ dy X dx 4. Solve the 2nd-order Homogeneous D.E. y" - 36y = 0