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.

Makes almost no sense during lecture - I taught myself a majority of the material. TA's are super helpful, as they teach you patterns to recognize for exams. The exams themselves are worth 30 and 50% of your grade, so each question is either worth 1 or 2.5 percent of your overall grade. Though, the exams were pretty easy compared to the homework.

Two midterms, the lowest one is dropped. Weekly homework, the lowest one is dropped. All the exams weren't too difficult, but his handwriting during the lecture was not great.