This was the best class I ever took. I got a B on the second midterm and final, but still ended up with an A in the class. The professor was also funny at times and will try his best to answer your questions. You also don't have to even attend lecture as he does proofs that aren't even on the tests and it comes straight from the textbook.

At first I didn’t like the prof. But then I didn’t do so great on the midterms and he really really helped me out! I am so grateful to have had him as my prof. I ended up not needing math 31a and instead I’m going to the life science series because I don’t really understand theory. SUPER IMPORTANT: do the homework!! To study for the midterms, do the homework again and the questions surrounding them. He sometimes uses the questions in the textbook/very very similar to them.

It is a solid class. Haofei knows his stuff and so teaches the material that he knows we need to know.
He did not go over related rates or optimization which I assume where part of the curriculum. Instead, we had a significant amount of work with proofs which for higher mathematics is required. I thought that was really cool.

Overall, a good time.

Fan is not as bad as the other reviews make it seem. He has an accent which makes it hard to understand what he's saying but he also writes everything important on the whiteboard anyway and the examples he uses are pretty clear. There is a decent amount of homework for the class but it's manageable. The exams were pretty easy, especially because most of the questions are either from the homework or some variation of something that was gone over in the lecture. Fan is pretty chill, especially about attendance, since you are not required to attend class at all except for turning in the homework. Overall he's not a great lecturer, but the tests are pretty easy and the class is pretty chill as a whole

This class was very difficult. The material wasnt too bad, since i have taken AP Calc before. But the exams were weird. Lots of proof questions.