Professor Kye is a super nice guy. He's very accommodating and polite. However, his effort towards this class was super low. I don't mind him lecturing straight out of the book. If he thinks the book is the best source, then that's fine. It's his assignments/exams that bothered me. Here's a fuller breakdown:

1) Professor Kye did not collect homework. Your grade is based on three exams: two midterms and one final exam. He did send emails with problems from the book that you should do to prepare. I felt like he stopped trying with those problems as the weeks went on. I don't think he even looked at what he was assigning, as some of the problems he picked were very bizarre. In office hours, he mentioned once that he hasn't looked at the problems yet, but I suspect he never looks at them, as he is not interested in any questions from the HW but is rather there to help you with lecture material.

2) His exams are very much inspired by the textbook as well. However, for our second midterm, he gave a problem that was not covered. Five hours into the exam time period (36 hours), he sent an email telling us to skip that problem. This shows that he literally didn't even look at the exam before publishing it. I'm guessing he made the exam a while ago and just put it away until it was time to release it. This type of effort is a bit annoying, because I spent a lot of my time trying to figure that problem out before he sent his late email.

3) His final wasn't cumulative, but the problems were definitely harder than the midterm problems. Lot of the problems required old stuff you learned pre-midterm 2 anyway, so even though the final wasn't cumulative, it might as well have been. If you self study throughout the quarter and go to TA office hours, I think you will be good to go.

Overall, Professor Kye is a good guy, but his class was kind of a mess. Math 170E is one of the easier math upper divs, so I think you will be alright! Good luck!