In fact, Yibin's mathematics is still good. I suggest you look at the examples before the exam. This will help a little. I would rather look at the examples carefully than blindly ask questions about sea tactics.

It's best to take three deep breaths at the beginning of the exam, and then stare at the topic, so it's easy to concentrate. There is also to make full use of draft paper. If some topics are graphics, it is best to draw them on draft paper, so it is not easy to make low-level mistakes. . In addition, in the calculation, if you encounter strange numbers, you should consider whether the calculation is wrong. But as long as you believe carefully, you can overcome this difficulty in calculation. .