The difficulty of advanced mathematics in postgraduate entrance examination varies from person to person, but generally speaking, advanced mathematics in postgraduate entrance examination will be more in-depth and complicated than mathematics in undergraduate stage. The difficulty of the entrance examination for advanced mathematics lies in the depth and breadth of the topic, as well as the thinking and problem-solving ability of the examination. Advanced mathematics requires candidates to master certain basic mathematical knowledge and problem-solving methods, including calculus, linear algebra, probability statistics and so on.

Compared with the mathematics study in the undergraduate stage, the postgraduate entrance examination is more in-depth and detailed, the topics are more difficult, and the angles of investigation are more diversified.

Compared with the undergraduate stage, the advanced mathematics test questions for postgraduate entrance examination are often more abstract and theoretical, which requires candidates to have a solid mathematical foundation and logical reasoning ability. The topics of advanced mathematics for postgraduate entrance examination usually involve many branches of mathematics, such as calculus, linear algebra, probability theory, mathematical statistics and so on. Candidates are required to master relevant knowledge points skillfully and use these knowledge points flexibly to solve practical problems.

The difficulty of advanced mathematics lies in its strong abstraction and logic, which requires candidates to have strong mathematical thinking and problem analysis ability. At the same time, the time for postgraduate entrance examination is tight, the task is heavy, and the study pressure is relatively high, which requires candidates to have good study plans and self-discipline ability.

For students preparing for the postgraduate entrance examination, it is suggested to start with mastering the basic knowledge, understand concepts, definitions and theorems, and establish a solid mathematical foundation. Then, according to different chapters and questions, carry out targeted exercises and in-depth understanding. Furthermore, by consulting relevant materials and participating in professional training courses, I can improve my math problem-solving ability and test-taking skills.

In addition, the ideas and methods of solving problems for advanced mathematics in postgraduate entrance examination often need flexible application and innovation, which requires candidates not only to be familiar with traditional problem-solving methods, but also to have certain mathematical insight and problem-solving skills, and to be able to skillfully use mathematical knowledge to solve complex problems.

Therefore, although we can't generalize the difficulty of advanced mathematics in postgraduate entrance examination, we need to make preparations in advance, systematically study advanced mathematics knowledge, do a lot of exercises, and master some problem-solving skills and methods in order to achieve better results in the exam.