Do it again! ! I've done it several times ... Although the topic is super simple, the vocabulary usage in the middle is quite elegant. I suggest you don't just do it once unless you know the words thoroughly. . (mainly to understand the meaning)

SAT2 is not urgent, 1 month can be done.

Let's take a look at some theorems in the middle, because they cover a wide range, and even have theories that you have to learn in college, but the depth of investigation is very shallow, and you only need to know how to use formula theorems. The topic is extremely simple, so don't worry at all.

What do you mean by detailed scope? If you don't understand, tell me and I'll answer.