I'm taking mathematical physics and mechanics 1 next semester. What do you recommend to prepare? I've taken Calc 1-3, ODE, and (half) a semester of linear algebra. I dropped Linear Algebra midway through this semester because I wasn't prepared to take so many courses while working. Anyway, what do you recommend? I want to take a math course on top of these two courses next semester to supplement my knowledge. Do you recommend PDE, Linear Algebra, or Complex Variables? To be honest I'm a bit worried about math physics because although I am naturally good at math (not trying to sound arrogant - most people on this forum are naturally good at math!) I haven't been in a "heavy" math course since Calc 3 which was awhile ago so I have a lot of brushing up to do.