Since the postgraduate entrance examination in 2009, the number three and the number four have merged into the number three, which means that there are only one, two and three in mathematics now, and the difficulty is reduced in turn. Generally speaking, science scores one point, engineering scores two points and other three points, as follows:

Mathematics 1: including line generation, high number and probability. The applicable disciplines are:

1. Mechanics, mechanical engineering, optical engineering, instrument science and technology, metallurgical engineering, power engineering and engineering thermophysics, electrical engineering, electronic science and technology, information and communication engineering, control science and engineering, computer science and technology, civil engineering, water conservancy engineering, surveying and mapping science and technology, transportation engineering, ship and ocean engineering, aerospace science and technology, armament science and technology, nuclear engineering.

2. Among the first-class engineering disciplines such as materials science and engineering, chemical engineering and technology, geological resources and geological engineering, mining engineering, oil and gas engineering, environmental science and engineering, two disciplines and majors with higher requirements for mathematics.

3. Management management science and engineering level discipline.

According to this classification, most computer majors in colleges and universities will choose to take math I, which is also the minimum math skill necessary for engaging in computers.

Math 2: including line generation and high number. The applicable disciplines are:

1. The first-class disciplines such as textile science and engineering, light industry technology and engineering, agricultural engineering, forestry engineering, food science and engineering are all two disciplines and majors.

2. Among the first-class engineering disciplines such as materials science and engineering, chemical engineering and technology, geological resources and geological engineering, mining engineering, oil and gas engineering, environmental science and engineering, two disciplines and majors with lower requirements for mathematics.

Mathematics 3: It is often called economic mathematics, including line generation, probability and high number. The applicable disciplines are:

1. Applied Economics in Economics. Statistics, quantitative economics, two disciplines, major.

2. Business administration, technical economy and management are two disciplines, and the major is the first-class discipline of business administration.

3. There are two disciplines, one is a major with higher requirements for mathematics in the first-level discipline of management, agriculture, forestry and economic management.

From the above, we can see that you should take math one. In fact, no matter how many you count, there are reference books compiled by Chen Wendeng or Li Yongle. Go to the bookstore and check the reference book of Math One. Their books sell well. You will understand when you buy books. Nothing profound. You hardly need to turn over math textbooks and read their reference books. The knowledge points listed above are all complete, and they are all compiled with the real questions of the postgraduate entrance examination over the years.