Point is the eye of math problem and the key condition. For big questions and difficult problems, we must first overcome psychological obstacles-we can't read them like political questions, and math questions need to be translated into math language bit by bit. Especially when there is no idea, write the topic on the draft paper in the simplest mathematical language, and then analyze the relevant knowledge points one by one to find out what is useful. Then look at the questions, push them according to the solution ideas (positive and negative aspects) of each question, and finally return to the required conditions. Do some big questions, once you get stuck, you can look at the following small questions and infer the conclusions that this question may need to find from the following conditions.
What you have to do is to integrate and connect each independent knowledge point and question.
Come on, math is an interesting subject. It's easy to learn!