The difficulty coefficient, I basically reached about 5.2, which is basically the highest in previous years, right? Many people can only get about 50 points for this difficulty, two points is 100, and the passing score is 60 points. Many people failed the exam. Therefore, when it is difficult, you must carefully prepare for the exam! Otherwise, you won't pass the exam.

From a practical point of view, counting one is the most difficult and counting four is the easiest; When taking the postgraduate entrance examination, different majors have different requirements for mathematics. So, there are four kinds of mathematics. For details, please check the recruitment examination brochure, and then select the corresponding mathematics examination textbook.

Mathematics 1:

(1) advanced mathematics (function, limit, continuity, calculus of univariate function, vector algebra and spatial analysis, explanatory geometry, calculus of multivariate function, infinite series, ordinary differential equation).

(2) Linear algebra (determinant, matrix, vector, linear equations, eigenvalue and eigenvector of matrix, quadratic form).

(3) Possibility theory and mathematical statistics (random events and possibilities, random variables and their probability distribution, two-dimensional random variables and their probability distribution, numerical characteristics of random variables, law of large numbers and central pole restriction, basic concepts of mathematical statistics, parameter estimation and hypothesis testing).

Mathematics 1 covers advanced mathematics, linear algebra, possibility theory and mathematical statistics mathematics 2: advanced mathematics and linear algebra mathematics 3: calculus, linear algebra, possibility theory and mathematical statistics mathematics 4: calculus, linear algebra and possibility theory are among the best in science and engineering, and No.3 and No.4 are in economics and management.