Professor makes a bad first impression, was tempted to drop on first day. But, his accent is only a problem the first day, and he teaches things very clearly. You can choose to have homework included if it benefits your grade. Very comforting environment, ended up really enjoying the class and it really changed the way I think.

Took him for Math 3A and he made it almost unnecessarily difficult to understand any concept. His accent is incredibly heavy making him nearly impossible to understand. He doesn't really know how to teach, he just starts writing on the chalkboard and doesn't explain anything. After writing something down he won't explain, and just say "y'know?"

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)

will 100% take again (ill fail)

Very difficult to understand, and unhelpful.

Professor Yang was nearly impossible to understand verbally. He would also start progressively shouting towards the end of class which gave me headaches. He didn't teach necessary math8 concepts like truth tables or different types of proof. You just copy his examples and memorize them temporarily for a good exam grade. DONT TAKE, save your sanity.

People complain about the accent but honestly not even that bad. 1 midterm and 1 final make up your grade but the questions were exactly from homework and lecture. Use TA's sections and do the hw, you will be ok.

might be the worse teacher ive ever had. your grade is based on two things.. midterm and final. the grading is unfair and his teaching is horrible. accent is not understandable. good luck if you have to take him.

It's basically a self-study class. Final is worth 70%, midterm 30%. His teaching is terrible and he speaks english at a semi-understandable levelHe had 2 exam questions that Porter and Schley students didn't know how to do. He had 2 professors audit his class where they interrupted him 10x telling him what he was doing wrong.

Not very good, don't recommend

Professor was very out of touch and didn't teach well at all, but was also incredibly harsh and condescending. The grading system was 30% midterm and 70% final. There was no syllabus until multiple weeks into the quarter and he wasn't going to have a website or a canvas until the department made him. Learned everything from the text and TA.

For Math 4B he wrote small, could not understand and made the final and midterm worth your entire grade. He was terrible

AVOID!!!!! Had him for Math 4B, and it was horrible. First lecture 15 people walked out. He is very hard to understand, given his very strong accent and mumbling, he does NOT explain concepts even if we just heard about them, graded 50% midterm 50% final, and his lectures are just unhelpful. Don't make the same mistake I did by choosing his class.

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.

Extremely unorganized from the start. He writes so messily on a tablet and his explanations are so bland. He changed his grading scale so many times throughout the quarter. He never showed up to exams because they had mistakes on them. Some things on the midterms were never covered in class. Some people aren't meant to teach and he is one of them.