The way of setting questions in math exam is relatively fixed. From the examination form, they are all subjective questions, generally 2 to 3 to proof questions, and the rest are calculations. Therefore, when preparing for the exam, we should focus on reviewing. Judging from the experience sharing of previous candidates, linear algebra generally has 4-5 questions and calculus has 7-8 questions. Judging from the content of the exam, the math problem seems to remain unchanged for thousands of years, and the possibility of the original question is not ruled out.
For liberal arts students, if they haven't studied mathematics, they can choose the mathematics textbook "Fundamentals of Economic Mathematics" (Calculus and Linear Algebra) edited by Gong Deen of Sichuan People's Publishing House. The characteristics of these two books are mainly that they attach importance to the basics, and the exercises at the back of the books are moderately difficult, and the contents basically include the contents examined in the exam.
For science and engineering students, there is no need to buy this book, just review the textbooks used by undergraduates.
In terms of test difficulty, the center's mathematics test did not reach the difficulty of postgraduate entrance examination (most of them are basic questions, but there will be one or two difficult proof questions to increase the discrimination). However, due to the different focus of the examination, it is likely that the central examination questions will examine the contents that are not often examined in the postgraduate entrance examination (such as transforming quadratic form into standard form by matching method, or proving that any square matrix can be represented by multiplication of triangular matrix), so it is recommended to be comprehensive and pay attention to basic review.