About to take this course in the fall in a hybrid Linear Algebra+Differential Equations course.
Did well and understood Calc I and II almost no problem but had some trouble with those surface and vector field integrals at the end of Calc III, but not so much the multi-integrals. We spent ~1 week total on that stuff in the end, no excuse but we breezed by the flux integrals sections.
What do I got to look forward to with the course I'm about to take brehs? What's gotta be sharp?
If you did ok in Calc 3 you should be ok with Diff Eq. I was an CompE major, so we did a lot in regards to sine and cosine functions and filters in regards to analog/digital signal processing (butterworth filters, hi/lo pass filters, etc). You use the chain formula A LOT if I recall, but more than anything, requires a physical understanding of what happens when you do an integration/derivation. You need to have a solid understanding of the calculus theorems as well (i.e. derivate of the integral is the function, etc) You have to do a lot of double derivatives/integrals as well. Good luck homey, but I think you'll be good, don't let all those nonlinear equations bother you, it's not as complicated as it looks. Teachers like to make things harder than they actually are to increase their self-worth.