1. Pay attention to the method of the topic rather than the number of topics. There are thousands of problems, but the method is the same. So try not to engage in crowd tactics, but to understand and study methods! The ultimate goal is to use it skillfully.

2. think about it. In class, you should be diligent in thinking. What methods should teachers use? Why are you doing this? How did you come up with it? What is the whole idea? Finally, master methods, develop good thinking habits and improve the quality of thinking.

3. Have a positive attitude. When I encounter a "difficult problem", I am better than others in mentality. "I am difficult, I am not afraid of difficulties!" In fact, the problem is one of the difficult steps, not difficult. It is a powerful force to accumulate and think about methods and have a good attitude. If you still can't do it, don't care, just do as much as you can, and then do the following things.

As to which one is the most difficult, it depends on the requirements of the outline. The demanding question must be the most creative, usually the finale of the function.

The textbooks used in different provinces are different, so the functions are different, but we should learn from scratch. Running through the whole high school mathematics study is the foundation!