Learn Math for E&M: Crucial Concepts & Advice

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Discussion Overview

The discussion centers around the mathematical prerequisites necessary for successfully navigating an Electricity and Magnetism (E&M) course, particularly for students who may not have completed all the required calculus courses. Participants share their experiences and seek advice on which mathematical concepts are crucial for understanding E&M.

Discussion Character

  • Exploratory
  • Debate/contested
  • Homework-related
  • Mathematical reasoning

Main Points Raised

  • One participant expresses concern about the E&M professor's expectations regarding mathematical proficiency, noting that many classmates have not yet covered certain topics in calculus.
  • Another participant emphasizes the necessity of having a working knowledge of integral and differential calculus to avoid difficulties in E&M.
  • Several participants highlight that E&M heavily involves vector calculus, which is typically covered towards the end of a multivariable calculus course.
  • It is mentioned that while a solid understanding of multivariable calculus is beneficial, undergraduate courses may present simplified versions of complex topics.
  • One participant reflects on their own experience of struggling with E&M due to insufficient calculus knowledge, suggesting that completing calculus II before taking E&M would have been advantageous.
  • A later reply mentions that students currently enrolled in calculus II have managed to succeed in the E&M class, providing some reassurance to the original poster.
  • Participants note that Halliday and Resnik's textbook employs integral calculus for various calculations related to electric and magnetic fields.

Areas of Agreement / Disagreement

Participants generally agree that a strong foundation in calculus is essential for E&M, particularly in vector calculus. However, there are differing opinions on the sufficiency of knowledge from calculus II alone, with some suggesting that additional study may be necessary.

Contextual Notes

Some participants indicate that the E&M course may involve advanced topics such as EM waves, flux, and circuit analysis, which could pose challenges for those without a complete calculus background. There is also mention of varying levels of mathematical rigor in undergraduate courses.

Andromeda321
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Hey everyone,
This term I'm enrolled in E&M which is a subject I've never formally learned anything in but I've loved for years and gained a lot of practical knowledge in (I'm a Ham radio junkie). Now I'm one week into the course and I really like it but there's one problem that needs to be taken care of ASAP. I'm enrolled in calc II this term (which is a corequisite) but the E&M prof seems to be under the distinct impression that the math ability in the class is a lot further then that. Not very complicatedly I'm told, but I and many of my fellow classmates have just never reached some things he's used for proofs etc in math class yet.
So I'm not going to let something like this get in my way of learning what I want to learn (can't drop it and wait a term as I'm an astronomy/physics major). Right now I've figured the best thing would be to learn ahead a bit in math so I will be familiar with the mathematical bits much better. I've learned a lot of math on my own and have a few friends further ahead in math then me willing to help out but I don't know what's most worth my time to study.
So in short what are the most crucial mathematical concepts you need to know in a basic E&M course? Because I don't want to suddenly discover before a test that I flat out don't know how to do something mathematically; I'm sure the class will be challenging enough without that! Thanks.
 
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If you do not have a working knowledge of intgral and diffential calculus, you'll have problems in E&M. I was in the same boat as you are, I didn't have enough calculus when I took my first E&M course out of Halliday and Resnik and nearly flunked it. I was able to learn enough to pass, but just barely.
 
E&M is vector calculus
 
cepheid said:
E&M is vector calculus

yeah, it's stuff taught mainly toward the end of calc 3. there are also courses entirely devoted to vector calc.
 
yeah.. generally you should have a working knowledge of multivariable calculus for line, surface integrals and such, but in undergrad class there is usually a watered down version with simple cases, etc, but still -I should have completed calculus 2 BEFORE beginning physics 2 - i think you might have a problem with it towards the end when they do EM waves, flux, and circuit analysis
 
Last time I looked at Halliday and Resnik, they used integral calculus to calculate the electric field, magnetic field, scalar and vector potentials etc...
 
Well I have to do E&M this term if I am to graduate in 4 years so I guess there's not much I can do there. However we do vector calculus at the end of this term and have already done a heck of a lot of integration. I've also asked around and apparently students who are in calc 2 are alright in the class all told. That makes me feel a little better.
Oh, and for the record, we're using Halliday and Resnik's physics book this term if anyone's interested.
 

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