16 channel, 5 points for each channel, ***80 points. More than half of the total score.

There are many sub-topics and basic questions, mainly based on the nature of the book and the application of formulas.

Set and Complex Number: Sub-questions are sent by default.

Plane vector: We can build as many systems as possible.

Counting principle: quadratic term theorem and distribution problems are mostly.

Statistics and Probability: Reading questions may dig holes.

Others: proposition, basic concepts of each chapter, calculation (inequality or specific size) ...

The questions in the middle and senior grades will mainly focus on geometry or function, and may be redefined in the exam.

Geometry: solving triangles, solid geometry, analytic geometry.

Function: the properties of function (monotone odd-even symmetry period) (logarithm and positive cotangent) and image (recognition and transformation), simple derivation and construction function (generally logarithmic ratio).

New definition: the trend of college entrance examination in recent years, give a new definition to the problem stem (not learned in high school textbooks), and then let you use it to solve problems. The difficulty is generally not too great, as long as you do it step by step in strict accordance with the description of the title.

Relatively speaking, there are many skills in choosing and filling, so we should pay attention to the control of answering time and strive to be quick and accurate!

answer the question

6 lanes, each lane is about 12, and the score is ***70. The plates involved are relatively fixed, and it is generally difficult to reach 1. (The new college entrance examination cancelled multiple-choice questions, and all six questions were required. )

Series: the knowledge points of the series are relatively concentrated, and usually the college entrance examination will not cross other knowledge points. Basically, it is to find a general term and the sum of two problems, and the frequency of maximum problem is low.

Triangle: Triangle involves many plates, but identity transformation is the foundation, and the basic formula must be mastered skillfully. Usually, it is mainly about solving triangles, and sometimes it is mixed with some knowledge points of trigonometric functions.

Solving triangle: usually one problem is the intersection of angles, and the other is the calculation of plane geometry. (It is also possible to take an examination of geometric calculation. )

Trigonometric function: Pay attention to the application of identity transformation and the properties of sine function.

Statistics and Probability: This part of knowledge points is very miscellaneous, so I won't list them one by one. However, except that the probability problem involving permutation and combination can be solved by violence, when you understand the formula and look at the chart, there is no problem.

The above three questions often appear as basic problems in the college entrance examination. If you want to be admitted to 90, you must be proficient in conventional problem-solving ideas, form a standardized problem-solving process, and strive to have ideas immediately after reading the questions. (It is forbidden to stand in a daze after reading the questions! ! ! )

Medium problems usually have two geometric problems:

Solid geometry: the difficulty of solid lies in the ability of spatial imagination, and many students can't read pictures. Usually ask the proof of vertical parallelism; Solve sine and cosine of space angle with two questions.

Analytic geometry: there are many knowledge points of analysis, and the difficulty lies in how to transform the conditions of setting questions into equivalent relationships. The background is dominated by ellipses and parabolas (it is rumored that there is no hyperbola test in Jianghu, and the entrance examination of eight provinces has hit the face). Usually, the equation or eccentricity is obtained from the properties of the curve; The second question focuses on the relationship between inspection and linear position.

These two geometry problems need a lot of calculation, which is time-consuming and laborious, and easy to make mistakes. Students who are slow in doing problems will face the embarrassment of not having enough time. Students who want to punch in 120 should pay attention to the accuracy of practice calculation, sum up some calculation skills, and do it at once.

If you really do something wrong the first time in the examination room, you basically have no chance to do it right unless you have a really good attitude. Moreover, it is not recommended for students with general mentality to check, and it is easy to be taken away directly on a certain issue. )

Finally, the big axis of high school mathematics, derivative: derivative is really difficult, but the basic formula should be remembered, because it is possible to test if you choose to fill in. If you don't have a clue, you can go up for guidance. I won't say much about the second question, so let's take your time.