In the basic stage of mathematics, graduate students can choose to do exercises and examples in Advanced Mathematics (seventh edition) compiled by Tongji University. Some classic college textbooks are easy to get started, and the topics are relatively basic. Don't ignore them. Among many teaching materials, Advanced Mathematics (seventh edition) compiled by the Department of Mathematics of Tongji University is an excellent one. There is also Mao 20 17, "Simplified Solution of Objective Problems in Mathematics for Postgraduate Entrance Examination". Mao (20 17) Summary of Methods and Skills of Solving Problems in Postgraduate Mathematics

Exercise: The problem set is basic, Li Yongle's, with 660 basic questions. If the math foundation is not good, read more about the postgraduate entrance examination outline, understand the formulas and theorems required above, read theorems and formulas repeatedly, and do some classic exercises in combination with a large number of exercises. You'd better do the real questions several times until you are very familiar with them.