New answers tagged differential-equations
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In the US, the norm has been (and still is) for there to be an INTRO to ODEs within the second semester of a stereotypical calculus course. You can see this as long ago as the Granville text from over 100 years ago. And it was almost identical in the Thomas Finney text I used in the 1980s, which was also AP aligned. (AP calc now still requires an ODE ...
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