1, Knowledge Points and Difficulty: Mathematics 408 for Postgraduate Entrance Examination involves deeper, broader and more difficult knowledge points, and needs to master more mathematical theories, methods and skills, so it is more difficult than 848.

2. Proposition style: Compared with the proposition style of 848 and 408, it pays more attention to examining students' mathematical thinking and ability, which requires not only mastering knowledge, but also understanding and applying the learned mathematical knowledge, so it is more difficult to take the postgraduate entrance examination for 408.