Preview, starting from the foundation, starting from close to junior high school knowledge. For example, junior high school has functions, and simple high school is more difficult. . Trigonometric logarithmic exponent and other functions. I don't want to know everything, but I will understand the main points after a general look, because the teacher still has to talk about it. If you can understand, it means that you are very smart. Hehe, it depends on the method of finding the function. Deduction is also very important. High school is just not better than junior high school. Psychological preparation is not as easy as junior high school. Of course, the order of knowledge in high school textbooks is not chaotic. The main thing is to look at your weak parts first. When you go to high school, you must ensure that every lesson of knowledge does not fall behind. You must firmly grasp the big block of high school mathematics, and you must not understand it at all, because this knowledge should be coherent.