The so-called moving point problem includes moving point, moving straight line and moving figure, which literally means moving point, moving line and moving figure.

To learn this kind of questions well, you need to do the following:

1. At any time, it is most important to master the basics. The foundation does not mean that you can recite mathematical concepts, but derivatives of mathematical concepts. The key is to apply basic concepts to solve problems.

2. Analyze the meaning of the question. Analyze what kind of moving point, moving straight line and moving figure the moving point problem is. According to the meaning of the question, it is the key to do this kind of question to draw graphs in different States, draw the critical point in the process of each graph transformation and write out the range of values.

3. Do the problem according to the determined value range and the graphics in different states.

4. Finally, don't forget to verify whether it is meaningful and practical.

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