How Can I Best Prepare for a Proof-Based Linear Algebra Course?

[randomperson8]

Hi. I'm going to be taking my Linear Algebra course in about a month. We had a kind of intro to proof-based math course that was a prereq to it that I took a semester ago. Honestly I really struggled in that class because I got behind and lacked a lot of motivation to do well. And it was just very difficult.

So I'm worried this is going to hurt me when I take Linear. My motivation is back for sure, and I *really* want to do well in this course. What should I do in the next month to get ready?

I'm thinking of going through the KhanAcademy videos on Linear Algebra, but I'm worried they may be too basic. I've heard the class is very proof-based. What should I do to prepare?

 

[micromass]

I think going through the Khan academy videos is a good thing to do. Because that allows you to get a feeling for linear algebra and to understand it conceptually.
Once you knows what's going on, the proofs aren't really all that difficult. The proofs that you encountered in your proof class were probably much more difficult than the proofs you'll actually encounter in linear algebra, so don't worry to much!

If you're finished with khan academy and still feel uncertain, then you should pick up a proof-based linear algebra book and work through some of the first pages. You'll see that there's really not all that much to it.

 

[magicarpet512]

Another supplement that you might want to check into is the Opencourseware program at MIT. The link below takes you to the undergraduate MIT course on Linear Algebra taught by Gilbert Strang. There is a whole semester's worth of lecture videos, assignments, exams, solutions, etc. These lecture videos should give you a good idea of what to expect in class. Also get yourself a book on linear algebra and work through some of the exercises; Gilbert Strang authors his own book which is used for the classes on these video lectures. Stephen Leon authors another good introductory book on linear algebra.
From my experience, the proofs in an introductory linear algebra course really aren't that bad; i think a lot of the course will be getting you focused on how to use linear algebra to solve numerical problems.

 

[magicarpet512]

Oh, and here is the link...
http://ocw.mit.edu/courses/mathematics/18-06-linear-algebra-spring-2010/