Entering the postgraduate entrance examination, different majors have different requirements for mathematics, so mathematics is divided into four types. Please refer to the enrollment brochure for details, and then choose the corresponding math textbook.

Mathematics 1 includes: high numbers, linear algebra, probability theory and mathematical statistics.

Mathematics II includes: high numbers and linear algebra.

Mathematics III includes calculus, linear algebra, probability theory and mathematical statistics.

Mathematics IV includes calculus, linear algebra and probability theory.

The best one is science and engineering, and the number three is four, such as economic management.

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Take a look, I also found information from this online when I took the postgraduate entrance examination.