1. function: Many concepts in advanced mathematics are based on functions, so knowledge of functions in high school mathematics is essential. This includes the definition, properties, images and extreme values of functions.
2. Trigonometric function: Trigonometric function is also widely used in advanced mathematics, such as calculus. Therefore, the knowledge of trigonometric function in high school mathematics is also necessary.
3. Sequence: Sequence is an important concept in higher mathematics, which can be used to describe a series of numbers arranged according to certain rules. Therefore, the knowledge of sequence in senior high school mathematics is also necessary.
4. Inequality: Inequality is also widely used in higher mathematics, such as solving optimization problems. Therefore, the knowledge of inequality in high school mathematics is also necessary.
5. Derivative and differential: Derivative and differential are one of the most important concepts in higher mathematics, which are used to describe the rate of change of a function at a certain point. So the knowledge of derivative and differential in senior high school mathematics is also necessary.
6. Integration: Integration is another important concept in higher mathematics, which is used to describe the cumulative effect of a function in a certain interval. So the knowledge of integral in high school mathematics is also necessary.