Function chapter is a compulsory and most important chapter in senior high school mathematics. Only solid geometry and probability statistics have nothing to do with functions, and others are related to functions, so functions are very important. Only by learning the function well can you have a chance to improve your score.

There are two main errors in mathematical functions:

First: drawing. Many students who are not good at math have a common problem, that is, they don't pay attention to details. For a simple example, the 45-degree angle in trigonometric function is drawn 90 degrees faster. In other words, the horizontal distance and vertical distance of the line graph are different. This will lead to many students' visual confusion, thinking that it seems to be equal, thus losing the analysis of numbers and the judgment of data!

Second: knowledge points are not firm. When studying mathematics, we will learn many formulas, many definitions and many theorems. Moreover, definitions and theorems need to be used repeatedly when doing problems. There are some topics that are the inversion of the definition and application of the past. If you don't understand the definition thoroughly, it's easy to get confused, not because you don't have enough brains, but because you are confused by the definition.

How to learn high school functions;

In view of the above two delays, seriously correct them. First, get the sketch right. Accuracy does not mean that you take a ruler bit by bit, but that you have the same proportion, just like the proportion on the map, and you can't be long and short, causing the illusion of confusing yourself. The second point, more important, is the key point to test your function. Although mathematics is the exercise of logical thinking, it also depends on brain power. Many people think that I can't learn these definitions, formulas and theorems even if I remember them. This is mainly because the practice is not in place. When doing math, don't just remember and don't practice. Everything should be based on data. In addition, it is necessary to learn the lessons taught by the teacher well and keep up with the rhythm of the teacher, which is to lay the foundation. We should lay a solid foundation. It is most important to master the basic knowledge and understand the basic concepts. There is also the combination of number and shape, mathematical model, starting from solving practical problems.