Two methods, Exact and Laplace, return exact solutions to a differential equation. Laplace, which as its name suggests, uses the Laplace transform to derive solutions, works for either homogeneous or nonhomogeneous linear differential equations with constant coefficients. Initial conditions are displayed in the solution. Exact is a more general method that works for some nonlinear differential equations as well. Each of these options recognizes some functions that the other may not.