He's great~

I love Ronchetti. Beast of a man. Great professor.

That being said, his class is significantly more difficult than your typical Math 33A course at UCLA in that Ronchetti expects a lot from his students. His lectures are clear and he always is open to taking questions during class. I would recommend going in person just because Bruincast doesn't always capture questions (or have good videography) and I personally find him much more engaging in person. Definitely recommend going to office hours if you can! I pretty much LIVED in his OH (bc ngl I'm not the best at linear) and got to get to know the prof pretty well. He's super duper understanding and able to reexplain concepts in different ways until you get it. Also a little sassy HAHA.

His homework is difficult in that it builds on concepts learned in lecture in a lot of ways including proofs (although he says they aren't proofs lol they are proofs). Even the computational problems are pretty time-consuming as they often involve ugly numbers or 4x4 matrices. They do force you to develop a much more thorough and interesting understanding of the content. But yeah his homework took quite a bit of time.

Midterms and finals were pretty difficult but overall, Ronchetti is fair in assigning grades. As long as you keep up with the material and make an effort to really understand what's going on, it's a rewarding course to take. Also Ronchetti is cool and the class was interesting because Ronchetti was so into the material yafeel?

If you're just trying to coast through math for the requirement or not looking for a challenge, though, I would take a different lecture. Last rec is to MAKE TIME to understand the material; that was my mistake. Deuces!

This class really hard! Many concepts require you to check out the proof and details in the textbook. All the exams are always in a rush. Our midterm1 mean is around 31/50 and midterm2 mean is 34/50.

For class vibe, most people I met and talked to are pure/applied math and hardcore engineering majors. As a life sci student, it's hard. The class seems to be chill, but contents are not.

If you have no other choice, please go to office hour from Week1 and try to go there with bunch of questions after reading textbook. And as Prof. himself said, "practice A LOT!" If you got nothing to do in your holiday, you better learn about the content on your own first, eg. through MIT open course and practice questions.

The most important thing: choose a good TA! for me, not Dean, who I stop going to the discussion after week2 as it's hard to follow.

Ronchetti is great, though you might find him unbearable for the first one or two weeks as he pours definitions into his lecture. But he always makes sure to explain and expand on these theorems and definitions. He gives very clear lecture in general. All of his lectures are on Bruincast, so it’s okay if you don’t physically go to his lectures.
His homework stretches your mind, but not to the extent of being unintelligible. Lots of the ideas in the homework help you to know the larger picture of linear algebra and even provides you with rigorous ideas of proof, presumably making your 115A a lot more easies (yes, Math major here).
If you are dedicated or you are smart, 33A with Ronchetti is a very good choice.

Pros:
His lectures are VERY clear, despite him talking a bit fast. But if you didn't catch it or didn't make to any of his lectures, don't worry~. His lectures will be Bruincasted as videos, so you can go back and watch previous lectures.
His office hours are EXTREMELY helpful for answering homework or practice questions (or if you just want to talk about anything and see his down-to-Earth, slightly sassy personality)
His homework questions are uniquely designed to challenge, but not become impossible, his students.

Cons:
His tests are EXTREMELY difficult. First midterm avg was 31/50, Second midterm 34/50.
The TA (I had Matt) wasn't of much help when we would go to discussions, as the material would be covered a lot quicker than the pace of the lecture.

Overall, this is a tough class with concepts that are more proof-based rather than computational. I would try looking for other professors for the same class first, although I do really like his personality and lecture style.

Super smart guy who teaches with high expectations of his students. Lecture was easy enough to follow, but homework definitely went beyond topics touched upon in class (not as computational as examples in class, some "proof" type problems), and tests were rough. i HIGHLY recommend finding people in the class to work on homework with!!! If you're not a math major/33a isn't something you're super into, I'd say find a different professor. If you ARE a math major and you really want to understand the material and be well prepared for 115a, ronchetti is the way to go. It's hard, so be ready to work for your grade, but it's definitely doable.

He was a good professor and taught the material clearly. He was also very clear about what was going to be on midterms and finals. That being said, his homework was very difficult, as were the midterms and finals.

Professor Ronchetti is great. Lectures are clear and engaging and he seems like a nice guy. His office hours are only helpful if you have specific questions. If you want help on the problem sets you’re probably better off asking the TA’s. The problem sets are rather tedious (approximately 10 per week) but they actually test your conceptual understanding. Discussion is especially helpful because the TA’s basically go over the concepts and type of questions that will appear on the exam. Knowing the definitions Ronchetti gives in lectures will also help you score a few free points. Overall, I learned a lot from this class and would definitely take another class by Ronchetti again.

Echoing a lot of the other reviews, Math 33A with Ronchetti is traumatizing especially for first-years. Though he is extremely helpful during office hours and takes a lot of time with questions in and out of the lecture, do mind he is very formal and punctual with his lessons. It's very clear he's super smart and it's as if he expects you to be as well. The tests are extremely difficult (30-40% midterm and 60% final averages), but he does curve very generously. No test is individually curved, but the final grade will be. Homework takes a significant amount of time and there are no solutions given even after it is returned to you. In general, Ronchetti expects you to figure out relations between concepts by yourself rather than by teaching, but, depending on the TA, they can do a good job of helping you out with that.

TLDR: Very hard but very helpful, high workload, high curve, expect a GPA dip.

Ronchetti is a great lecturer. He’s assignment is really difficult but that helps you to understand the concepts better (if you take this class, make sure to understand every single question on the problem set fully). The workload is fine( about 10 questions each week). The good thing is the midterms and finals are not as hard as assignments so once you understand the homework you will probably do good in final and midterms too.

He also gives out tons of practice tests and helpful review sessions. He is passionate and likes his students.

Anyway, I feel prepared for my 115A now and I would definitely recommend this class if you are a math major ( not sure about others because his materials can be really difficult sometimes)