1. verification method

It is a mathematical multiple-choice solution that substitutes the conclusions provided by the selected branches into the stem of the question for operation or reasoning, and judges whether it meets the conditions of the question, so as to eliminate the wrong selected branches and get the correct answer.

2. Comparative exclusion method

On the basis of understanding the meaning of the question, this method first excludes obviously wrong or unreasonable alternative answers one by one according to the requirements of the question, and finally leaves only the correct answer. If the option is completely positive or negative, it can be excluded by giving a counterexample; If there are contradictory or mutually exclusive options between the options, one of the two options may be correct, and of course both options may be wrong, but they can never be both correct.

3. Special value method and extreme value method

For the quantities that are difficult to directly judge whether the options are right or wrong, we can skillfully select some physical quantities with special values or extreme values that meet the conditions of the topic and bring them into each option to test one by one. Any option that is proved to be incorrect by the test of special value or extreme value must be wrong and can be ruled out. This method can often save strict logical reasoning or complicated mathematical proof.

4. Image graphic method

This method is to draw an image or schematic diagram according to the content of the topic, such as the moving image of the object, the force schematic diagram, the light path diagram and so on. And then use image analysis to find the answer. When answering with images or schematic diagrams, it has the characteristics of images and intuition, which is convenient for understanding the relationship between physical quantities, avoiding the complicated calculation of multiple-choice questions in mathematics and finding the correct answer quickly and simply.

The required knowledge points of college entrance examination mathematics are summarized as follows

1, plane vector and trigonometric function, trigonometric transformation and its application, this part is the focus of the college entrance examination, but it is not difficult. It mainly produces some basic or intermediate problems.

2, probability statistics, this part is related to life, is an application problem.

3. Investigate the definition and properties of conic curve, trajectory equation problem, parameter problem, fixed point fixed value problem and range problem, and solve the problem through coordinate operation of points.

4. Investigate the related concepts of set operation and function, such as the definition domain, range, analytical formula, limit, continuity and derivative of function.

5. Prove parallelism or verticality, and find the angle and distance. This paper mainly investigates the familiarity and application of the theorem.