Differential equations for engineers the essentials - Kalbaugh, David V. (Boca Raton CRC Press, 2018)
Chapter 1. Introduction -- Chapter 2. First-order linear ordinary differential equations -- Chapter 3. First-order nonlinear ordinary differential equations -- Chapter 4. Existence, uniqueness, and qualitative analysis -- Chapter 5. Second-order linear ordinary differential equations -- Chapter 6. Higher-Order Linear Ordinary Differential Equations -- Chapter 7. Laplace transforms -- Chapter 8. Systems of first-order ordinary differential equations -- Chapter 9. Partial differential equations.
Keywords: Differential equations; Engineering mathematics