High school function mainly includes the concept and representation of function, and the following basic functions: 1, power function. This is the simplest function and quadratic function is the best example. This kind of function will be associated with inequality, which is a bit difficult to pay attention to. Pay attention to the combination of numbers and shapes. 2. Exponential function and logarithmic function. It is very important to pay attention to their properties. Especially the domain of definition and the domain of value. 3. Compound function is to compound the above functions into new functions. For example, if an absolute value symbol is added to the power function, the image should be folded. 4, abstract function, the key to solving the problem: using existing conditions to derive. Among them, the first few concepts are the key points, especially closely related to the content of the previous "set", which can not be ignored. The best way to learn functions is to learn the combination of numbers and shapes and master the above knowledge points. We must have a deep understanding of the concept and don't underestimate those short lines, which is a very important condition when solving problems. If you still feel abstract, then you may get some inspiration and gain something by combining specific topics and experiencing them seriously. . . In my experience, it is necessary to preview before class, but my preview is rough, and I only glance at the teaching materials, so that the contents and key points of the teaching materials are roughly in my mind and I can be more targeted when I attend classes. When we preview, we don't need to be too detailed. If we are too detailed, it is a waste of time. Second, I will be a little lax in class, and sometimes I will ignore the most useful things. It is of course necessary to listen carefully in class, but as one of my former teachers said, no one can concentrate in a class, which means it is impossible to concentrate for more than 40 minutes, so there is also a problem of time allocation in class. Teachers can relax when they talk about familiar things. Understand the contents of important chapters in the textbook, do more questions, and it is best to contact what you have learned. In addition, for multiple-choice questions in mathematics, we should learn to be good at using drawing method, special value method and exclusion method, which are simple and quick, especially geometric questions, sequence questions and probability questions.

We should firmly remember all kinds of properties and inferences about major geometric problems. Moreover, the solutions to some problems are regular, and we really don't just memorize them. This is mainly because of doing more questions and summarizing and classifying.

Other questions are to sum up what you have done, find out what you can't understand, and do more similar questions to ensure that you will have another chance. I hope you can get good grades in math, (* _ _ *) hee hee. ...