Avoid this professor. Three things about this class specifically ticked me off:
1. He spent about 2 weeks reviewing material from 33A because a lot of people had not taken it before taking 33B (don't know why it's not a prereq). I understand it's necessary to explain it to students who haven't taken 33A, but he could have gone much faster/more efficiently than he did, wasting everyone else's time who already knew about matrices.
2. In week 10, he realized how behind he was on material, so he just kind of threw everything at us week 10 and I didn't feel I had enough time to figure it all out before the final (and that last week's material made up a majority of the final). Especially considering the textbook is completely useless at explaining.
3. Such BORING lectures. I'm not saying math is the most thrilling subject on the planet, but come on, it could be far more interesting than Bao made it. He's not very clear in lectures either and doesn't discriminate well between similar topics, so they tended to all blend together in my head even though they were different.
TL;DR. Don't take Bao.

I LOVED Bao. I think he is adorable and I like his teaching style. His grading scheme is also very generous. His tests are very direct and fair. He did end up teaching something that wasnt in the book, so that was kind of tough, but I think he saw the class didnt understand it and honestly the questions he asked involving that topic were super simple. Also he does teach a lot of proofs that he doesnt require us to know on exams (THANK GOD), but I think he does this to try and give students a better grasp on the concepts. Its only my first year at UCLA but he has been my favorite professor for any subject.

Selling my textbook Rogawski second edition single variable calculus with binder included. No notes or highlights, and in mint condition. Text me at (818) 585-4397 I can meet on or around campus. Selling for$50 with price negotiable.

Bao is great! Dont listen to all those people whining. He is very fair, told us what he will test us on (and followed through) and didnt do anything ridiculous. This was the only class where I followed every single lecture with no problems, even the proofs. Also, he challenged us on the exams rather than throw some random proof at us. Highly recommend.
I am selling my textbook Differential Equations by Polking in a binder in excellent condition. No notes or highlights, and in mint condition. Text me at (818) 585-4397 I can meet on or around campus. Selling for $65 with price negotiable. I used it for Math 33B

Overall I feel like Bao is very middle of the road. I've had some really bad math professors, so I can guarantee he's better than a good deal of the people here, but he doesn't stand out in any particular way. I'm not good at calculus, but I worked my butt off and I got a B+. The curve was fairly generous. If I had the option of taking Conley or any of the other highly rated math professors, I'd go for it, but if not then Bao is suitable. You'll learn the material.