These upstairs are not talking about the postgraduate entrance examination for mathematics majors. Compared with advanced algebra and advanced mathematics, mathematical analysis is more difficult to learn. The flexibility of the test paper is also relatively large, and the structure of the test paper with mathematical scores is different from that with high numbers. It's usually eight answers. The first one or two questions are almost all proof questions. Learning mathematical analysis is to find out the ins and outs, learn theorem proving, and review according to mathematical analysis textbooks. The textbook we use is Mathematical Analysis compiled by East China Normal University, which is very clear, especially the following exercises are typical. We treat the book of mathematical analysis and the exercises behind it as three or four times. Every time I read it, I will get different results, and sometimes I will feel suddenly enlightened!