Introduction to Ordinary Differential Equations

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Summary: Ordinary Differeintial Equations
Review: I have Professor Saperstone as a math professor this semester for ODE which is why we used this book. There are no strong points of the book which I can say make it worth buying. Many of the sections are out of order, there 12 pdf pages of errata in the 1st edition, and some of the difficult concepts are explained in odd ways. For example, when explaining graphical analysis he did a long explaination of the preditory prey modeling which made the analysis quite difficult to understand. After a few hours I realized what he was trying to teach me was what I had learn in algebra II. It was really frustrating.