The differential equation y-4y (y7 5x) can be written in differential form: m(x, y) dx n(x, y) dy 0 where , and n(x, y) м'х, у) — the term m(x, y) dx + n(x, y) dy becomes an exact differential if the left hand side above is divided by y . integrating that new equation, =c the solution of the differential equation is