There are not many students in the first grade, and the concept is simple and the cognition is strong. It can be done at a glance. The first function in the last semester of Senior Two is the basis behind, including the properties of algebraic expressions. The univariate quadratic function in the second semester of senior two and senior three is closely related to it. The above is the basis of concrete and abstract functions learned in senior three, so we need to have a simple understanding of the concept of senior one, starting from senior two and senior three. Reviewing functions should also clarify the relationship between functions and equations, which is helpful for us to better understand equations. Image method is very important in the representation of function, which is very helpful for us to understand function and solve function problems.

When you study math, you should do more problems. After understanding the examples, you should draw inferences from others and practice more. Persistence is a must in study and work! Good luck!