Determine whether the given differential equation is exact. If it is exact, solve it. (If it is not exact, enter not) (2x - 1)dx + (5y + 9)dy = 0
Determine whether the given differential equation is exact. If it is exact, solve it. (If it is not exact, enter not) (7x + 3y)dx + (3x - 8y^3 )dy = 0
Determine whether the given differential equation is exact. If it is exact, solve it. (If it is not exact, enter not) (sin?(y) - ysin(x))dx + (cos?(x) + xcos(y) - y)dy = 0
