Differential Equations
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A differential equation is a mathematical equation that relates some function with its derivatives. In applications, the functions usually represent physical quantities, the derivatives represent their rates of change, and the differential equation defines a relationship between the two.
Elementary Differential Equations with Boundary Value Problems (Trench)
Differential Equations for Engineers (Lebl)
A First Course in Differential Equations for Scientists and Engineers (Herman)
A Second Course in Ordinary Differential Equations: Dynamical Systems and Boundary Value Problems (Herman)
Ordinary Differential Equations (Wiggins)
Differential Equations (Chasnov)
Applied Linear Algebra and Differential Equations (Chasnov)
Numerically Solving Ordinary Differential Equations (Brorson)
Introduction to Partial Differential Equations (Herman)
Partial Differential Equations (Walet)
Partial Differential Equations (Miersemann)
Thumbnail: Slope field with select solutions. (Public Domain; pbroks13t via Wikipedia)