So far, I have studied calculus, linear algebra and probability statistics. Probability and statistics are easy to understand at first, but later you know, it is really difficult to get in touch with many new concepts and related knowledge of calculus.
Linear algebra still has some ideas. According to the teacher's explanation, it has a certain understanding. There are problems when doing problems, just like the eyes know that the hands can't, which makes people laugh and cry.
Some contents of calculus are from high school, but it doesn't affect that I can't learn it, haha. Those derivatives and differentials are really a headache.
In the final review, the teacher gave us some outlines, which I found quite useful.
I made an outline and learned the corresponding scores, so I probably have a little idea. Finally, it is strongly recommended to study college mathematics at ordinary times, and to watch some related courses recorded online in combination with understanding and learning.