Because applied mathematics is not about computation; it is about asymptotic reasoning . ChatGPT can solve a regular perturbation series, but it cannot teach you how to recognize a singular perturbation problem before you start. Greenberg can.
: Focuses on the linear algebraic structures essential for modeling. Ordinary & Partial Differential Equations foundations of applied mathematics greenberg pdf
Greenberg’s Foundations is not a "cookbook." If you just want to plug numbers into a formula, this book might feel slow. Because applied mathematics is not about computation; it