The lectures were terrible. He talked quiet and wasn't clear. What was expected in the course was not clear. It's sad this is what we pay for. I took an 8 am in person with him before covid and everything was straight forward.

It was clear this professor had near to none lecture notes as his videos were ramblings that were incomprehensible and often filled with errors. Would omit proofs and refer you to Rudin in which the proof was 3 lines of equations. One video he never completed and left the video running. You have to teach yourself which makes tests difficult.

IMO, Chen's lectures aren't the best. They are disorganized, he speaks rly slowly, he tends to skip small steps assuming that we already know how to do that part which just confuses me more. He also tends to make arithmetic mistakes. His tests are difficult but you can submit your work to get points back and he's pretty liberal w/ giving back pts.

My experience with this professor was his confusing and dry lectures with disorganized notes. He is poor at explaining questions during office hours, and makes arithmetic mistakes in his lectures.

Signed up for his class because of all the good reviews on here but man was I mislead. The lecture videos are downright unwatchable.. his pronunciation is hard to understand and he literally just does the problems from the book which explains them much more clearly. Terrible grammar and handwriting and SO SLOW. Only learning from the book.

The class was very organized. Lectures were a bit boring sometimes but he seems like a nice guy. Homework was minimal and he offered extra credit for using the forum on GS. Gave super helpful practice exams that were very similar to the real exams. Exams were a bit more difficult though, but he does give partial credit if you show your work.