Advanced Mathematics (Volume I) edited by the Department of Mathematics of Tongji University, published by Higher Education Press, sixth edition; Linear Algebra of Engineering Mathematics, edited by Department of Mathematics, Tongji University, published by Higher Education Press, fifth edition; The fourth edition of Probability Theory and Mathematical Statistics, edited by Zhu Sheng of Zhejiang University, was published by Higher Education Press. At the same time, we should study according to the relevant knowledge points of the 20 1 1 year mathematics postgraduate entrance examination outline, regardless of the outline requirements. (The outline of 20 12 didn't come out until the beginning of September.) Although it is the third grade examination of mathematics (economics), we must look at the mathematics textbook of engineering. The mathematics textbook of economics can't meet the requirements of the basic review of postgraduate entrance examination.