As long as it is Mathematics III, that is to say, the national unified examination, the best textbooks are Higher Mathematics published by Tongji University, which is green; Probability and Mathematical Statistics (4th Edition) is a national planning textbook for general higher education in the 11th Five-Year Plan, edited by Sheng Chu, Xie Shiqian and Pan. There is also engineering mathematics: linear algebra (5th edition), Higher Education Press of Mathematics Department of Tongji University; These three books cover all the knowledge points of the number three, and the specific knowledge points refer to the examination syllabus of previous years.