Mainly the difference in content. The difficulty is similar. For example, although the scope of number two is small, the extra content is high, and high number is often the most difficult part of the three subjects.

The number one is the most comprehensive, covering almost all the contents of advanced mathematics, probability theory and linear algebra.

The topic is difficult, with the widest scope and the greatest difficulty.

The range of number two is small and precise, mainly in the first volume of advanced mathematics, the second volume of advanced mathematics and some contents of linear algebra. There are still some small test sites that are not tested, such as gradients.

The scope is small and easy to review, but the difficulty is not low (202 1 is an exception, and the number two is surprisingly simple in three mathematics). The number of people who take this exam is often the largest, and the competition is extremely fierce. In other words, although it is easy to review, you must get high marks if you want to go ashore.

The number three is mainly economic majors.

Reform in 2020. The range of number three is basically the same as that of number one. It's just more economic application problems, not physical application.

Although the scope is the same as the number one, the difficulty of the topic is slightly simpler.