Notes on Diffy Qs: Differential Equations for EngineersVersion 6. 2. An introductory course on differential equations aimed at engineers. The book covers first order ODEs, higher order linear ODEs, systems of ODEs, Fourier series and PDEs, eigenvalue problems, the Laplace transform, and power series methods. It has a detailed appendix on linear algebra. The book was developed and used to teach Math 286 285 at the University of Illinois at Urbana Champaign, and in the decade since, it has been used in many