Great professor if you can get over his heavy Chinese accent. Uses MathLab heavily. Haven't taken his midterm/final yet, but lectures were very good and easy flowing. I recommend him.

This guy is AMAZING! Lil difficult to understand him initially but eventually you get used to him. Also, very easy exams and a very helpful guy.I Highly recommend him

Very heavy accent. He is a great professor. Midterm final Homeworks, were very simple. Highly recommended !!!!!!!!!

AWESOME GUY!! Attend his lectures and study from his notes.. and there's no need fore anything else.. Make sure u do the hw again for the final.. Make sure u go for the class before the mid-term.. he hints stuff there!!

ok he has a accent, but i thought it was funny; he seems like a guy with a great personality. he explains things very well and uses lots of examples in class, hw weekly and quizzes almost weekly (both on mathlab), 1 midterm and a final. if you took calc beforehand, it should be an easy class. if u didnt, ull learn from him and shouldnt be too bad

He has a pretty strong accent but u'll get use to it. Hw, midterm, and final was pretty easy. He explains the topic very well. I think think his lecture was boring. If you haven't taken calculus before definitely take his class you'll learn a lot from him.

He has an accent, but so does everyone! Has all the grasp a person can acquire in the subject matter. Lenient in his grading; curves quite nicely. Go to office hours, very helpful.

He is a wonderful professor. Be prepared, he does have a thick accent; however, you pretty much need to focus on what he writes on the board. Homework is done online and is really easy. Generous curve. Good prof and class.

Heavy accent, but I picked it up in about a week. Never opened my textbook. Homework and quizes online. Weird program. Only works in IE. Professor was good, but MT/Final were hard. Problems VERY difficult.

After you get used to accent, he's actually a great teacher. Lectures very well organized, does lots of good examples.

Dr. Xia is a very good professor. He has a heavy accent, but it only takes a few lectures to get used to. He moves fast, but by doing so he prepares you well for the exams. The helpful homeworks solidify concepts very well. Funny guy who tends to laugh at himself a lot. Coherent slides posted online make class okay to miss. Overall, a great choice.

Great professor! Though he does carry a heavy accent, but the material he presents to the class(through power point)is very clear and easy to understand. Assignments are helpful for exams,too. Overall, this is a good choice to consider

He really wants to help his students and encourages questions. His paper homework isn't too bad (if you need help go to discussion), and the online homework is easy because there are sample probs. If you took Calc BC in high school, this class is quite easy. If not, it can be hard to understand him explain certain concepts. Overall, a good class.

Ironically, the happiest math professor I have ever seen/had. Most math professors are rather dull and expressionless. Pretty easy class. He has a VERY strong accent, but you'll eventually get used to it. Grades were very generous and tests weren't difficult as long as you do the homework.

This class was extremely difficult since I did not take Calc in high school. His accent takes a while to get used to - go to office hours since he does better one-on-one. He goes through examples a bit too quickly in class but the TAs are usually helpful. He provides practice exams but the actual tests are much harder and are NOT curved.

Xia seems like a really nice guy. Unfortunately, his Asian accent makes things hard to understand sometimes for some people. I'm from an Asian background so I had no trouble. However some of this examples take a bit of time to get. Also, this class was FREAKING HARD! I barely managed an A and I have a pretty strong calc background...

Accent is somewhat hard to understand at first, but gets easier too understand as the quarter goes on. Practice exams are almost exactly like actual exams. Homework is reasonable and assigned weekly.

Professor Xia is very entertaining. We had a relatively small class so it was funny just messing around with him as he was lecturing. For this class: IF YOU DO AND UNDERSTAND THE HOMEWORK, YOU WILL GET AN A! That's it any grade lower is most likely your fault. He is an easy grader. Accent is the only thing that is hard to understand

This was my favorite math course at davis so far. Do the homework and the practice tests and you should have no problem getting an A or B. Nice professor who cares about the students, and kept lectures interesting. Really joyful guy who likes his job.

Great guy with a great personality. Always takes time out to answer students' questions during lecture. The accent is tricky in the beginning, but can be overcome by attending lecture consistently. Tests are very predictable, just do the homeworks, go to discussion, and study the practice midterms and you should get above a B- quite easily

He is super friendly and takes time to answer questions himself. Although his accent is thick, if you regularly attend lectures you should have no problems. He tends to build from the ground up in his lectures so be patient because they might help you understand the general concepts. If you do his the practice exams, you'll do fine on the tests.

Very nice professor and very approachable. His accent is a little strong but nothing you can't get used to. Provides plenty of examples and are willing to answer any questions. Recommend!

Professor Xia's the man. He is without a doubt the happiest professor (or teacher) I've ever had, and it's hard not to smile in his presence. The midterms are very similar to his practice tests and the 5 quizzes with one dropped is an easy 20% of your grade. Despite his heavy accent, I'd definitely recommend him.

Professor Xia is extremely helpful, clear and fair when it comes to what he expects you to know for exams. While he didn't give practice exams or finals, most of the questions come straight from the homework. He has a very positive attitude towards teaching and I am so happy I get to have him again next quarter.

Strong accent, quite tolerable. Very jolly in lecture. HW is relatively simple as it only requires you to utilize in class theorems. MT problems are essentially HW problems so if you do well on HW, then you probably will do well on the tests

Professor Xia really cares about his students and tries his best to help us understand the material. His accent does take some getting used to, but it's not too bad. He is very knowledgeable in the subject. There are weekly quizzes, 2 midterms and a final. They are all very fair, and you should have no trouble if you put in effort and study.

Very clear standards and finals/midterms are straight from the practice tests and homework problems. Just don't fall behind because it's hard to catch up. Pretty conceptual lectures but uses plenty of examples.

This professor is the best I've had in the whole 17 series. Slight accent but not too bad, and very cheerful and engaging lectures. Tests are exactly like practice tests. I love how happy he seems when teaching; you can really tell he enjoys what he is doing. Also, the class itself is not too hard, just builds off of 17B.

Pretty laid back professor, pretty funny as well during lecture. Test are straightforward and are heavily based on homeworks. Thus do the homework and you should be fine. The only challenge is his accent which is kinda tough but you'll get to use to it. Otherwise, a fine professor.

The original professor of this course had to step down as the instructor and Dr. Xia took over for him. The transision was super smooth. He does have a thick accent, but it is possible to understand him. Super freindly in class and in OH. Final was fair, had easy parts and hard parts. Homework wasn't too demanding. Would definetly take again.

Dr. Xia is a very great teacher. He provides proofs and calculations, not just copying the book, with details and decent explanations. He is super nice and helpful during the office hours.

Easily the best math professor I've ever had. He's so genuinely excited about everything that calculus can do in the world that it actually made me want to go to class. He has a strong accent, but it's easy to get used to. Print and use the pdf notes he posts. Great lecture style, takes time on examples to make sure you understand what you're doing

Awesome professor! He genuinely cares about his students and wants us to succeed. Thorough explanations and a lot of examples. Uploads his slideshows on Canvas. Assigns WebWork and written homework; drops the lowest score from both types of homework. Provides practice exams that are similar to the real ones. Exams were very fair.

Best math prof ever! Prof Xia explains abstract analysis ideas clearly and makes them easy for us to understand. Exams are similar to hws.

Best math professor ever! I hope I can take his class again before I graduate. Office hours is real helpful!Definitely recommended!!!

Best math Professor ever! Prof Xia is literally a saint! thumbs-up

good professor fair grade fair curve

He is the best professor I have ever met! The course is not easy, but he delivers in a processing way, which makes it easy to understand. He is so nice to students and always responsive! He is always kind and patient with us. I would like to take another course from him again!

Very kind and helpful. Really cares about the students and wants them to learn. The tests were very fair and representative of the hw and lecture.

Best professor ever! He is very helpful and explains concepts very well. If you want to do well in his class, make sure you go over his lecture notes after class, go to office hours (TA's or his) if you have questions, and make sure you understand every single homework problem and all the main theorems before the exams.

Prof. Xia gave pretty good lectures and plenty of webwork homework. It is very important to dedicate time to the course. Exams take up to 80% of the grade and the final is not easy. Make sure to study. Good course and professor overall.

Prof Xia is a solid choice for 21C. His lectures weren't super helpful IMO, but his webworks/homeworks were reasonable. Both midterms were easy and almost exactly like the practice ones he gave us. Final was a little trickier, but not by much. Overall, I put pretty little effort into this class and was still able to end with a 96.6%.

Practice exams are very similar to the real ones. One of the best professors I met at Davis.

Our grade is mainly determined from our tests, so make sure to do well on those. The practice exams are pretty similar to his tests, but his tests are closed-note. Homework was also pretty heavy (due 2-3 times weekly). However, he was a nice professor. He would never hesitate to stop and answer any questions we may have had.

Professor Xia is responsible about his teaching, and his lectures and homework will give you a firm understanding of 127B. It is also important to fully digest all the theorems. I can see that the professor always wants to see more student participation, but still some never attend. Go to the lectures because it is the only way to succeed.

Been in the class for a few weeks. Honestly, he's a great person and is really really kind and caring especially in OH. His lectures are aright, usually just following the textbook since its very standard linear algebra material. There is written HW and online HW and they're fine. He has a thick accent but you get used to it.

Honestly, his score is not as high as it should be. Yes, the accent is thick, but the lectures are straightforward enough. He does lecture capture and posts lecture notes. He is accessible and helpful. The homework is manageable and his test questions are fairly straightforward too. Solid professor.

Online homework assignments can pile up and be a hassle to do at the end of the quarter but everything else (written homework and exams) are very easy. Exams are almost a copy of the homework problems which makes the exams very easy. Easy to get an A if you understand the homework pretty well.

Straightforward written homework due once every week/every two weeks based on examples given in class along with online homework due before each major exam. 2 midterms and a final based almost solely off of the written homework. Lectures were recorded. Thick accent but you get used to it. Doesn't make the class any harder than it has to be imo.

His lectures are clear and straight forward. He is also very willing to answer questions after class. And there are about 2.5% extra credits on the final. He is one of the best Professors I met in Davis!

perfect and the best professor

Taken during Summer Session so super fast paced. Still packed all of the regular quarter material into a short class, but I feel like he tested accordingly. Two midterms (25% each) and one final (30%) and homework (20%). His lectures were super organized and he had multiple choice questions that really made or broke your grade. Kinda heavy accent

Lots of hw but only 10%grade so dont trip but do them to learn.2Midterms & 1Final is most of the grade. Provides 1practice midterm foreach and 1practice final which are almost identical to the real ones so as long as you do them youll be ight.Go to lecture or look at his notes he posts on canvas.He the homie fr yall hatin, youll get used to accent.

I was worried at first bc of Prof Xia's reviews. However, he is really sweet and makes fair tests. If you need help, he's always willing to help out. Calc room and TA office hrs are great resources too! I think I could gotten an A if I put in more effort towards the end. You'll be find if you can do all the hw questions without help.

Pretty straightforward with homework and tests. Homework can be difficult at times, but the test questions can be easier than the homework, and created with hand-calculations in mind. Tests feel fair, and use question types you've seen before.

His class is pretty easy and he might open up extra or repoen existing WeBWork exercises if enough students are struggling

Has a very thick accent but you get used to it. Gives practice tests that are very similar to the actual exam. Homework heavy but drops the lowest score. Very nice and helpful during office hours. Lectures are very fast

The class is very fair, if you understand all the webwork, written homeworks, and study guides, the midterms and final should be an easy 100 and they look a lot like the written homework. Has a bit of an accent but it's not too bad and you don't need to attend lectures really anyway.

Protect this man at all costs. Definitely go to his office hours if you can; he is super friendly and open to helping students!

Terrific lecturer, he explains the concepts so well and easy to understand. As long as you go to his lectures, you will be fine. His homework on webwork can be tough at times but he is accessible at office hours and will help you. His tests are similar to his practice midterms/final. Enjoyed this class a lot!

Protect him at all cost!! Lectures were so clear and informative. I feel like you don't need to understand the materials in this class, you just need to memorize all the techniques.(He definitely explained the concepts really well, it's just memorization is easier for me) Lowest homework dropped. A+: 96.5; A: 92.5; A-: 89.5; B: 80.5; C+: 70; C: 64

Very clear lectures and exams are similar to the practice exams. He posts the lecture notes. Homework took a long time but he gives you all the information you need to solve it. Very nice about regrades. Thick accent tho.

Professor Xia is the GOAT. His lectures are kinda fast but he includes examples (easy to do hwk). He makes the midterms and finals considering the calculations we have to do and the questions are very similar to the practice exam.

Challenging but rewarding class. Attend office hours and use unstuck study for extra practice - it really helps. Tests are fair if you stay on top of the homework.

One of my favorite classes so far that I've taken at Davis! I really enjoyed learning about ODEs and this professor made the content very digestible. The grading for the midterms and final were very generous. Also your lowest homework grade is dropped! I highly recommend taking 22B with this professor if you get the chance.

Makes things pretty easy to understand even with the accent and goes over lots of examples, really energetic in lecture and receptive. Quite a bit of homework which got tough later on but still manageable, lowest one gets dropped. Exams were almost exactly like the practice ones and graded generously though there was a bit of a time crunch.

If you attend lecture, do the homework, and do all the practice exams, you're set for the actual exam. He doesn't curve a lot, but he honestly doesn't have to because he prepares students so well for the exam. I would take him for any math class if I could.