Differential Equations: An Introduction to Modern Methods
by James R. Brannan, William E. Boyce · James R. Brannan, William E. Boyce
Undergraduate textbook by Brannan and Boyce that treats differential equations through a systems and modelling lens, mixing analytic, geometric, and numerical methods. Readers come away able to solve first-order and linear equations and analyse phase portraits of linear and nonlinear systems.
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