/sci/ - Science & Math

Okay
I just got out of my calculus 1 final, the differential part fucked me up and I am pretty sure I got the optimization questions completely wrong since I couldn't simplify certain variables out of the way.

I still pass the course no matter what I get from the final, but I don't feel like I earned it. How do I intuitively understand maths? I've been studying whilst watching Professor Leonard and have been solving problems from textbooks but I still completely froze up today in the face of simple rates problems, like I forgot everything.
I kept confusing myself the most by rereading the problem and reinterpreting what it meant. There was a classic opt. problem where you have to minimize time spent swimming and walking, and I completely shut down when trying to place 1300-y for example, like I haven't done similar problems a hundred times for weeks