Pretty bad lecturer and the slides he has posted are from previous years and don't always match up with what he covered in class. There are two midterms, lowest is dropped. Lowest homework is dropped. Midterms and the final were really easy though. Easy class but poor prof IMO.

His lectures were pretty scattered and not super worth going to. He also writes out a bunch of problems and concepts but his handwriting is almost completely illegible. I had to teach myself almost all of it but the TAs had very useful resources.

He wasn't the worst that's for sure. In fact his lectures were good for the first half of the course. His lectures at the very end were kind of all over the place. His tests were pretty fair, but he constantly didn't follow the lecture slides and was unclear about certain expectations. It's a test heavy class, but doable.

Stopped going to lecture after week 2 because I couldn't understand a word he said. Has a thick accent, mumbles, and his handwriting is illegible. The only good thing about this class was the TAs and the slides they posted bc all the slides from the prof were entirely unhelpful. Tests were super easy but you won't actually learn anything.

easy a, i've never seen easier math tests before

Honestly not too bad. His handwriting kind of sucks, but if you show up to every lecture you can get a pretty good idea of what's going on. Graded by 2 midterms (with one score dropped) and a final, which ended up being a copy paste of said midterms. Just show up to every lecture and it's a pretty easy class.

Bad handwriting and didnt test on a lot of ODE topics. MCQ only tests

Tests are all multiple choice because they don't want to hand grade anything. The final contained the exact same questions as the midterms, which does make them easier, but does not at all test actual knowledge.

I mean he's alright

Exams are challenging bc its all MCQs (10 for two midterms and 20 for final) and have lots of questions that need one page of scratch work to get the answer. The professor is nice but has a heavy accent and incomprehensible handwriting, so it's hard to follow during lectures, which means you have to put in a lot of work for this class to do well.

two midterms, one is dropped but answers only made available for midterm 2 and not 1. final is worth 50%. lectures are uploaded from around covid times so they're not the same as ones in class. not sure how i did in the class but before the final, had a ~85%. scared final dropped me down very low. you're going to have to teach yourself everything.

Drops the lowest hw, 2 midterms but lowest one dropped, but final was worth 50%. A little hard to understand the material without the TA's help. Have to do lots of studying on your own but 4B doesn't have hard topics so it is manageable. his uploaded lectures are not the exact same as the ones he goes over in class, they're just for reference.

The best math professor. I've had him for 104a, 104b, and now 104c. The review sessions before the midterm and final are extremely helpful, homeworks can be tough but are doable, and the lowest 1-2 are dropped. 2 midterms but lower one is dropped. Take his class if you have the chance!

Heavy accent and doesn't really explain things well. as others have said he copies notes/lectures from another prof and often presents incorrect information. Hw takes FOREVER to do and is very code-heavy, pain in the behind tbh. exams are pretty difficult and relies on memorization of concepts. overall do not recommend (i also took 104b with yang)

legendary. Guaranteed A if you go to lectures and put in a little effort.

took his 104A earlier so take this 104B again. getting a good grade is not easy when your TA is tough, but prof himself is not bad. hw is reasonable. if u skip his class, dont skip the review session. the grading policy is so nice. the "drop the lower mid score" literally saves my life. //will write another comment when i finish his 104c.

Prof Xu Yang is very nice and patient. He has review sessions that help us prepare for mid & final, which is SUPER helpful. drop the lowest for one of the hw & one of the mid.

Literally just used another professor's lecture slides and notes.

Very heavy accent and does NOT care about his students. Just keep talking and talking and assume everyone knows what he talks about.

Professor Yang communicates with the students often with emails, his lectures were straight-forward and I felt like I had a deep understanding on the content, and the exams are challenging. I strongly recommend for Math 3B.

Did not even create his own lectures, used another teacher's lectures from the previous quarter - everything was asynchronous. Quizzes were 5 questions and the lowest one is dropped. You will definitely need to study extra for this class if you want a good grade in it.

Very disorganized lectures. Bad handwriting and difficult to understand. Lectures consist of him doing examples while providing little to no explanation. Do NOT recommend.

wasn't attentive to student needs :(

Super disorganized, hard to understand his speech or handwriting, no response to emails, posts hundreds of hw problems but doesn't say which are important, midterms and final consists of some stuff we don't spend any time on. Didn't show up to any of his exams which all had grading errors, Yang is intelligent and a nice guy, but bad at teaching.