a) Verify the above differential equation is not exact. b) Find an integrating factor that will make the differential equation exact. Verify your work. c) Solve the differential equation (implicit form). dy x + y dx 2xy a) Rewrite the differential equation in the form = f(+). Letv = and make a x substitution to turn the differential equation in terms of r and x only. b) Solve the differential equation (implicit form). (x+3xsiny)dx + x*cosydy = 0.