First of all, don't be too nervous, because in college, teachers usually focus on the key points during the exam, such as which chapter is the key point, and the general exam will be big calculation, and these teachers will mention it. With the focus, you won't be too blind. In addition, teachers must do well when assigning questions and get the answers right when explaining them, because teachers like similar questions done in exams, and those are the key points. If you understand the questions you have done, just read the book twice. Don't be afraid to say that the failure rate of college mathematics is very high. Knowing the topic assigned by the teacher is to grasp the key points, and the exam is inseparable. Sister, I've been studying all these years, and that's how I got here. Mathematics is not that terrible.

In short, as long as you try your best, you will get something. Come on!