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.

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.

I'm definitely biased because I come from a math background, but 213B Hu was amazing! Her lectures were very insightful and she does a good job at communicating the motivation/intuition behind each concept. Her exams, while difficult, were curved very generously. You definitely need a good grasp of analysis to fully appreciate her teaching though.

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.