Upper-level Linear Algebra or upper-level ODEs?

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The discussion centers on a friend's dilemma between taking an upper-level linear algebra course and a differential equations course at Cornell, both of which are crucial for pursuing graduate studies in physics. Participants emphasize that both courses are essential, with many agreeing that linear algebra is particularly important as it serves as a prerequisite for advanced classes in the physics curriculum. There is a consensus that understanding linear algebra is necessary for effectively tackling differential equations, especially when dealing with systems. Some contributors note that students often struggle in differential equations without a solid foundation in linear algebra, suggesting that prior exposure to linear algebra concepts is beneficial. Overall, the recommendation leans towards prioritizing the linear algebra course if only one can be chosen.
RedAnsar
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Hi all,

The title is pretty much the question. My friend (who wants to go to graduate school in Physics) is between two courses the math department offers: an upper-level linear algebra course, and a second course in ODEs. Here are the course descriptions:
MATH4200 - Differential Equations and dynamical systems

Covers ordinary differential equations in one and higher dimensions: qualitative, analytic, and numerical methods. Emphasis is on differential equations as models and the implications of the theory for the behavior of the system being modeled and includes an introduction to bifurcations.
and
MATH4310 - Linear Algebra

Introduction to linear algebra, including the study of vector spaces, linear transformations, matrices, and systems of linear equations. Additional topics are quadratic forms and inner product spaces, canonical forms for various classes of matrices and linear transformations.
The school in question is Cornell, in case anyone has further suggestions that could be relevant to Cornell in particular?

Thanks!
Ansar
 
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Both are very nearly essential.
 
I don't know what you're friend has already taken in terms of math, but I would agree with Number Nine. Both of those courses are essentially required if your friend wants to go to grad school for physics.

In my university, you can't get your degree without taking several courses in both of those areas.
 
Hey there! I'm a physics major at Cornell as well. I agree with the above but if he/she can only pick one of the two then I would personally go with the LA class because it is a pre-req for some important classes that come later on in the Cornell curriculum.
 
I don't understand how he can take Diff Eq without linear algebra. Has he already taken some "lesser" linear algebra? Perhaps stuck into the calc sequence?
 
Robert1986 said:
I don't understand how he can take Diff Eq without linear algebra. Has he already taken some "lesser" linear algebra? Perhaps stuck into the calc sequence?

It is usually necessary for at least a chapter of the course when you deal with systems, but I know that in my linear algebra class a lot of the students didn't have linear algebra- they just had to spend more time learning the linear algebra. The instructor also did a short review of some of the necessary LA. Although, I would recommend a student taking ODE's to at least have knowledge of basic linear algebra...
 
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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