First, the function:
Function: Function can be said to be the key to the whole high school mathematics. In high school mathematics, every section needs the guidance of functions. This is a link in high school mathematics.
In college entrance examination mathematics, the content of the function is only about 30 points, including exponent, logarithm and image change. The key to the investigation is to fill in the blanks, choose the form and draw some images to answer the questions correctly.
Geometric function synthesis: this kind of comprehensive problem is also a common problem in the college entrance examination, which is generally a trapezoid of 20 to 30 minutes, that is, to investigate some linear programming and cone definitions; Cone and cylinder are the focus of research. There will also be some questions about surface area and volume. In addition, there is lateral area, or cut off a part and ask students to calculate its area.
Second, the series:
Sequence is the key content and difficult point in senior high school. In fact, I learned some series in junior high school, but the content of learning is relatively shallow. At this stage of high school, sequence is an important part, and the learning depth will be strengthened.
Series will allow students to calculate the value of the previous series, and also calculate some geometric series and arithmetic progression, which is better without drawing.
In fact, this section is relatively simple. The sequence is difficult because the formula is difficult to memorize, and the formula problem is its biggest difficulty. As long as you remember some dead formulas and use your brains flexibly, you can solve the problem by putting them inside.
Third, trigonometric functions:
Trigonometric function is also the key and difficult content of high school mathematics. The examination of trigonometric functions is generally an inductive formula or a proof solution.
In addition, the analysis of the image will allow students to calculate the translation and symmetry changes of the image, and then carry out some monotonous and monotonous periodic checks. The final examination of the function is the synthesis of geometry and practical examples, which is the more difficult part.