What math to take alongside Physics 3 Thermo and Waves

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When considering enrollment for the next semester, the choice between Differential Equations (DE) and Linear Algebra is significant for a physics major who has completed Calculus 1, 2, and is finishing Multivariable Calculus. While some suggest taking DE first due to its relevance in physics, others highlight that personal preference and curriculum guidance play crucial roles in this decision. The school's curriculum indicates that DE is recommended for the fourth semester, while Linear Algebra can be taken at any time. The discussion also raises concerns about the workload if both courses are taken simultaneously, with some participants noting that DE can be particularly challenging and may require a deeper understanding over time. Ultimately, the decision should consider the individual's comfort with course difficulty and their academic trajectory.
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I am enrolling for classes for next semester and I have the option to take either differential Equations or Linear algebra or both next semester. I have completed Calc 1, 2, and I am completing multivariable this semester. I am a physics major and going into thermo and waves next semester so I was wondering which one i should take or if i could take both at the same time?
 
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I would suggest that you take DE next, but that is largely a matter of personal preference. Does your school's nominal curriculum give any guidance on this matter?
 
Dr.D said:
I would suggest that you take DE next, but that is largely a matter of personal preference. Does your school's nominal curriculum give any guidance on this matter?
At my school I am technically ahead in the math curriculum so I am technically not required to take diff eqs just yet (they recommend you take it 4th semester and multi-variable 3rd, but i took it second) and linear they said you can just get it done whenever so i was thinking about taking linear first and getting that out of the way that way I will still be on course with my math track, but honestly if I could take both at the same time and knock them both out that would be amazing as well. I'm just not sure if that will be too much of a course load.
 
Much depends on the content of your DE course. This was the most difficult math subject for me personally, and I'd have to say, it took years for me to fully digest it. I took the course once (in the pure math department) but did not think I had learned anything useful. I took it again in the applied math department, and I learned some useful ideas but saw my grade drop a letter. I decided to stop there and continue on my own, learning it through dynamics, vibrations, controls, etc.
 
Hey, I am Andreas from Germany. I am currently 35 years old and I want to relearn math and physics. This is not one of these regular questions when it comes to this matter. So... I am very realistic about it. I know that there are severe contraints when it comes to selfstudy compared to a regular school and/or university (structure, peers, teachers, learning groups, tests, access to papers and so on) . I will never get a job in this field and I will never be taken serious by "real"...
Yesterday, 9/5/2025, when I was surfing, I found an article The Schwarzschild solution contains three problems, which can be easily solved - Journal of King Saud University - Science ABUNDANCE ESTIMATION IN AN ARID ENVIRONMENT https://jksus.org/the-schwarzschild-solution-contains-three-problems-which-can-be-easily-solved/ that has the derivation of a line element as a corrected version of the Schwarzschild solution to Einstein’s field equation. This article's date received is 2022-11-15...

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