The first point is that you must be highly familiar with concepts, which is often ignored. It's actually very useful. You should be able to deduce every theorem. Secondly, each type of problem has its own routine, and the problem is the superposition of multiple routines. It's much easier to solve each process step by step as long as you take the problem apart. Third, do more to find feelings, there is nothing to say, but it is not a topic, moderate.

Precautions:

1. Preview the textbook before class. Before class, you can read what the teacher will say the next day in the textbook to see what you can understand and what you can't understand. In this way, when the teacher lectures, we can listen with questions and understand problems that we don't understand.

2. Listen carefully in class. This is very important. Many students think they know everything, so they do their own problems. In fact, even if you understand it yourself, you can see if the teacher has any other way to understand, and whether the teacher's method is better than yourself. Sometimes it's better to watch it by yourself than to listen to the teacher.

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3. Review carefully after class. What you have just learned has not been fully digested and absorbed into your own knowledge, so it is easy to forget if you don't review it in time. Therefore, we must spare some time after class to consolidate what we have learned in time.

4. Consolidate through practice. Mathematics is a science, which needs to be consolidated through certain exercises. Only when quantitative change accumulates to a certain amount can qualitative change be realized. This is not asking you to play crowd tactics, just asking you to be proficient.

5. Repeated research on wrong questions. Prepare an error book by yourself, record the mistakes made in the exam, write down the reasons for the mistakes, and study them repeatedly to avoid making mistakes again.