The homework and two online midterms were easy to get 100 on, but I had to teach myself basically everything. The final was in person and much harder than the midterms. Many people were cheating but for those that completed the test in good faith, the grading was very nice.

Two online midterms thats easy to get 100%. Final is very bad, which is basically a row reduction test involving impossible fractions (literally heard people sighing when taking it). Professor is nice but has heavy accent. Questionable exam proctoring with people literally cheating which results in the class being unfair and having minimal curve.

Don't choose his class, don't! Very very bad class and you will study nothings. You will all study by yourself for this class and I think the professor doesn't know English. Moreover, final exam count 60 percent of GPA and it's super super difficult. It's random number in Matrix for you to calculate. Even it can't calculate by humans.

Thick accent, difficult to understand. Used Khan Academy to pass the class, waste of time and money.

too easy to get an A. All the things on canvas. better than 95% courses in ucsb

Dai is funny at times and clearly had good intentions. However his inability to lecture and lack of clear explanations on almost everything means self-study is required. Homeworks are very difficult, while midterms are easy. The final counts for most of the grade and is challenging, but doable. This is only my opinion. Your experience may differ.