Current location - Training Enrollment Network - Mathematics courses - Explanation of Mathematical Problems in Shanghai Adult College Entrance Examination in 2022 (1)?
Explanation of Mathematical Problems in Shanghai Adult College Entrance Examination in 2022 (1)?
Free consultation for quick registration of senior high school entrance examination: /xl/ Hunting Examination Network has sorted out the explanation of "Mathematics" in the 2022 Shanghai Adult College Entrance Examination (Volume I), and sorted out the difficulties in the mathematics examination of the college entrance examination. I hope the exam difficulties in the article can help everyone. Let's have a look! Explaining the Difficulties of Mathematics in Shanghai Adult College Entrance Examination in 2022 (I)

First, the hard magnetic field

Given set A={(x, y)|x2+mx-y+2=0}, B={(x, y)|x-y+ 1=0. And 0≤x≤2}, if A∩B≦, the value of the real number m is taken.

Difficulties: Determination of Sufficient and Necessary Conditions

Sufficient condition, necessary condition and necessary and sufficient condition are important mathematical concepts, which are mainly used to distinguish the relationship between condition P and conclusion Q of a proposition. This section mainly analyzes the meaning of necessary and sufficient conditions through different knowledge points, so that candidates can accurately judge the necessary and sufficient relationship between two given propositions.

Second, the magnetic field is difficult

Given set A={(x, y)|x2+mx-y+2=0}, B={(x, y)|x-y+ 1=0. And 0≤x≤2}, if A∩B≦, the value of the real number m is taken.

Difficulties: Determination of Sufficient and Necessary Conditions

Sufficient condition, necessary condition and necessary and sufficient condition are important mathematical concepts, which are mainly used to distinguish the relationship between condition P and conclusion Q of a proposition. This section mainly analyzes the meaning of necessary and sufficient conditions through different knowledge points, so that candidates can accurately judge the necessary and sufficient relationship between two given propositions.

Third, the magnetic field is difficult.

Given set A={(x, y)|x2+mx-y+2=0}, B={(x, y)|x-y+ 1=0. And 0≤x≤2}, if A∩B≦, the value of the real number m is taken.

Difficulties: Determination of Sufficient and Necessary Conditions

Sufficient condition, necessary condition and necessary and sufficient condition are important mathematical concepts, which are mainly used to distinguish the relationship between condition P and conclusion Q of a proposition. This section mainly analyzes the meaning of necessary and sufficient conditions through different knowledge points, so that candidates can accurately judge the necessary and sufficient relationship between two given propositions.

Fourth, the formulas of trigonometric functions in the triangle

The trigonometric function relationship in triangle is one of the key contents of college entrance examination over the years. This section mainly helps candidates to deeply understand sine and cosine theorems and master the methods and skills of solving oblique triangles.

Hard magnetic field

It is known that the three internal angles A, B and C of △ABC satisfy A+C=2B. Find the value of cos.

Proof strategy of difficult inequality

The proof methods of inequality are flexible and diverse, and can be combined with various contents. The content of inequality proof and the proof of pure inequality have always been difficult points in high school mathematics. This difficulty focuses on cultivating students' mathematical deformation ability, logical thinking ability and the ability to analyze and solve problems.

Hard magnetic field

Known as a & gt0.b & gt0. And a+b= 1.

Difficult inequality

Inequality is widely used in production practice and related disciplines, and it is also an important tool for learning advanced mathematics. Therefore, inequality is the focus of NMET mathematical proposition, and it is widely used to solve inequality, such as finding the definition and value range of function. In NMET, the solution of inequality is very demanding, which is often closely related to the concept and properties of functions, especially quadratic functions, exponential functions and logarithmic functions. Judging from the college entrance examination questions over the years, there are contents about solving inequalities every year, some of which are directly examined and some are indirectly examined.

Hard magnetic field

(★★★★★) Solve the inequality about x.

Comprehensive application of difficult inequalities

Inequality is another important content after function and equation. As a tool to solve problems, its comprehensive application with other knowledge is more prominent. The application of inequality can be roughly divided into two categories: one is to establish inequality to find the range of parameters or solve some practical application problems; The other is to establish a functional relationship and solve the maximum problem by using mean inequality. This difficulty provides relevant thinking methods, so that candidates can use the properties, theorems and methods of inequality to solve problems in functions, equations, practical applications and so on.

Hard magnetic field

Let the quadratic function f (x) = ax2+bx+c (a >; 0), two roots of the equation f(x)-x=0, x 1, x2 satisfies 0.

(1) when x∈[0.x 1, prove x.

(2) Let the image of the function f(x) be symmetrical about the straight line x=x0, and prove that x0 < x0.

Examination service:

1. If you want to know about the preparation, click online consultation for details!

2. Click on the candidate exchange group and punch in for the exam with other candidates!

If you have questions about the senior high school entrance examination, don't know how to summarize the contents of the senior high school entrance examination website, and don't know the local senior high school entrance examination policy, click on the bottom to consult official website and get the review materials for free: /xl/