Weak mathematical foundation: advanced mathematics is based on secondary mathematics. If you don't learn mathematics well in middle school, it will become more difficult to learn advanced mathematics.
Insufficient mathematical thinking ability: Higher mathematics needs higher abstract thinking ability and logical reasoning ability. Without this ability, it is difficult to understand and apply the concepts and methods of advanced mathematics.
Improper learning methods: Advanced mathematics needs to learn and master a lot of concepts and methods. If you just learn by rote and don't understand its essence and application scenarios, it will be difficult to grasp its essence and will also affect the follow-up study.
Lack of interest and motivation: Advanced mathematics needs a lot of time and energy. Without enough interest and motivation, it is difficult to persist.
Therefore, if you want to learn advanced mathematics well, you need a solid mathematical foundation, high mathematical thinking ability, correct learning methods, enough interest and motivation. At the same time, we need to make constant efforts, do more exercises, and constantly strengthen our mathematical literacy and application ability.