The teacher said he was irresponsible. You can go to the math institute and ask yourself, why is this class so strict? Some of my classmates failed in math at that time, but failed in the make-up exam. They passed the retake exam, and I haven't heard that they won't be allowed to retake the exam.
If you really have no choice, you can wait until the final exam, because you have to attend classes every day when you repeat, and you can't skip classes, otherwise you will be depressed if the teacher is unhappy. This will conflict with your other classes and probably lead to your other classes at that time. However, one of my classmates is going to attend classes in Baiyun Campus, but our specialized courses are in Baoshan Campus. In the end, he has no specialized courses. The final exam is scheduled one week before or after your thesis defense time. At that time, your work will be basically finished. Just take the exam directly, and you don't have to pay. The teacher will let the students in the final exam take the exam alone in the classroom. Without an invigilator, you can take the exam yourself (you know), so you can't pass it.
It is easy to retake and clear the exam. Let's go