Find a set of solution unless the statement of the exercisestipulates otherwise.

29. Solve in two ways the equation y' = ax + by + c; with b + 0. 30. (ajx + ky + c) dx + (kx + bay + c) dy = 0. 31. 2x du + v(2 + v2x) dx = 0; when x = 1,0 = 1 32. (2x - 5y + 12) dx + (7x - 4y + 15) dy = 0. . 33. [1 + (x + y)2] dx + [1 + x(x + y)]dy = 0. 34. (x - 2y - 1) dx - (x - 3) dy = 0. Solve by two methods. 35. (2x - 3y + 1) dx - (3x + 2y - 4) dy = 0. Solve by two methods