I have a student whose situation is similar to yours. College entrance examination 145, failed in freshman year. The reason why you think college mathematics is difficult may be that (1) advanced mathematics is based on high school mathematics. Some knowledge university teachers think that you have learned it, so they don't talk about it, such as limit and derivative of compound function. You won't. It's hard and reluctant to do it in private. Even if the teacher knows that you don't understand these knowledge points, the teacher won't personally help you liberal arts students make up this piece and let you do it yourself. It's easy for them to stand and talk, hehe; (2) Because you are not familiar with the knowledge points in a small range, your confidence will be lacking. Supported by a strong sense of frustration, you are "stupid" Solution: You'd better ask your high school science math teacher to make up two classes for you. If you don't go to a local university, you can basically do it by asking your tough classmates to solve 20 problems with you on the premise of learning this knowledge first. The knowledge points that liberal arts students in senior three have not studied advanced mathematics need to be supplemented are probably: limit, derivative of compound function, derivative of function division and continuity of function. These knowledge points are based on high school learning, slightly higher than high school mathematics. Students who study advanced mathematics are advised to solve more problems. The number of questions is the only index to ensure that you learn advanced mathematics well. You can buy problem sets in the bookstore. Tongji University has a good problem set.