It is best to start from 1987, that is, from the first year of the unified mathematics examination. One of the characteristics of mathematics proposition for postgraduate entrance examination is that the latest proposition will have ideas or angles that were tested more than ten years ago or even more than twenty years ago, especially linear algebra.
For example, the second largest problem of linear algebra in 2020 is very difficult and unconventional for many students, as if it had never been done. If you study the real question carefully, you will find that this idea has already appeared in the test of 200 1, and there are many similar examples.
If you encounter a difficult problem, it's really chewy. A clever strategy to solve a problem is to break it down into a series of steps or small problems. Solve some problems first, solve as many as you can, and write as many steps as you can. Failure does not mean failure.
Especially those problems with obvious problem-solving level, or procedural methods, can score every step of calculus. Although the final conclusion has not been reached, the score is over half. It's called "getting points for big questions", which is really a good idea. Postgraduate entrance examination mathematics, postgraduate entrance examination subjects, according to the different requirements of various disciplines and majors on the mathematical knowledge and ability that postgraduate entrance examination should possess, there are three kinds of postgraduate entrance examination mathematics papers, and the types of papers used by different majors have specific provisions.