What exactly is the relationship between calculus and differential equ

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Discussion Overview

The discussion centers around the relationship between calculus and differential equations, exploring why differential equations are often treated as a separate course in academic curriculums. Participants examine the structure of math courses and the content typically covered in calculus sequences versus differential equations classes.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant notes that differential equations are defined as "equations and how they relate to their derivatives," suggesting there may be more complexity involved.
  • Another participant explains that the naming conventions for math courses vary by region, citing differences between the USA and the UK, where courses are not typically labeled as separate calculus levels.
  • It is mentioned that differential equations can involve both ordinary differential equations (ODEs) and partial differential equations (PDEs), with prerequisites from earlier calculus courses.
  • Some participants propose that while basic differential equation solving is covered in calculus courses, the complexity of the topic warrants a dedicated course, especially for applications in various sciences.
  • A participant shares an anecdote about a school that labeled its courses differently, illustrating variability in course structures and naming conventions.

Areas of Agreement / Disagreement

Participants express differing views on the structure and naming of calculus courses, with no consensus on a singular approach. The discussion reflects multiple perspectives on the necessity and content of differential equations courses.

Contextual Notes

Limitations include varying educational standards and naming conventions across different regions, as well as differing prerequisites for courses that may affect how differential equations are taught.

Deinosuchus735
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When I look up curriculums at school, I always find the main sequence of Calc 1-3(single variable to multivariable) then differential equations. But when I look up the definitions, diff equations are just called "equations and how they relate to their derivatives." I'm assuming there's more to it than that. What makes diff eq have its own course rather than just putting it in the main calculus sequence?
 
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The course names are just something that has emerged as a sort of "standard" in the USA. When I learned this stuff (quite a while ago, in the UK) nobody talked about separate courses called Pre-calc, Calc 1, Calc 2, etc. In the UK, all the math courses up to high school level are just called "maths" (and the UK doesn't call high schools "high schools" either!)

Differential equations can involve derivatives of a single variable, or partial derivatives of several variables (usually called ordinary differential equations or ODEs, and partial differential equations or PDEs). Calc 1 and 2 are prerequisites for ODEs and Calc 3 (multi-variable) for PDEs. So they are "part of the main calculus sequence", except the course isn't called "Calc 4".

There are two sorts of diff eq courses: those that just teach you how to solve them, and those that also teach you some mathematics. The more mathematical courses need linear algebra as a prerequisite as well as calculus.
 
Adding to AlephZero's response, most calculus sequences do teach the basics of solving differential equations. Normal integration can be thought of as solving the simplest differential equations. But, it gets very complicated quickly and finding solutions to differential equations are very important to most sciences, so an entire semester is devoted to at least ODE's.

I have a friend that went to a school where they had Calc I-IV instead of calling Calc IV a differential equations class. Both Calc III and IV required linear algebra. I forget which school it was, but the course was the same except that it took longer to get her transfer approved :cry:
 
I see, thanks for the responses
 

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