He's fine as he provides examples in class, but hw & exams are ridiculous to some extent. He gives practice problem but some questions in real exams are very hard. Some of quizzes also not easy. Need lots of efforts for his class if u want a decent grade although he did curve. 80% on miderm & 90% on final & everything else almost 100% and got A.

Extremely hard to understand during lecture which made going to lecture boring... I just copied down his example problems because I didn't know what he was saying. I thought this would be an easy class since I had taken AP Calc in high school but his tests were so much harder than they needed to be. That being said, he did give a good class curve.

I did not enjoy Professor Guang's teaching style. Lectures seemed to me like a regurgitation of the textbook, but somehow in an even less clear way. Very technical in his teaching and almost mechanical in his behavior. I would not recommend him at all. I am sure he is a great researcher but my least favorite instructor yet at UCSB.

Homework consists of problems all over internet pdf's, Khan Academy, and mainly youtube. The problems are good to make the exams easier, therefore I am saying they are very difficult.

He is the best Professor that I've ever seen. Clear lecture, clear lecture notes and very kind. Though he has accent sometimes makes difficult to follow, the lecture notes will help you a lot. This courses is super hard, however, he made it easier than it seems. Excellent professor.

Very organized professor, shows a lot of examples in lecture which really help!! He posts practice tests for the midterm and final, and they very similar to the actual exam.