Generally, the mathematical finale of the senior high school entrance examination in Beijing will be based on the combination of graphics and functions. For graphics, it is to find the law, for functions, it is to find the resolution function of the moving point. Combination requires the area of a graph with a moving point moving on the function axis. It is difficult and the process is very complicated and changeable. Ordinary students in provinces and cities can't do it. I'm not as good as a freshman.

LZ needs to study hard.

If you don't understand, keep asking questions and hope to adopt them. Thank you. I cried if I didn't adopt.