Can't tell if the material itself was insanely hard or if he didn't explain it well... Lim was really nice and tried his hard to explain things in O.H. but it felt impossible to get. Midterm was easy, he said most ppl got an A there, final was crazy hard (even with curve). Weekly section quiz was easy, but lectures are unclear and very fast paced.

Professor Lim is a tough professor, but he is very accommodating if you have issues with homework or tests. His tests do not have any surprises and are straightforward. He is very knowledgable

Lectures were necessary but he posted all notes online which was very helpful. Homework is all on webwork which takes a while but isn't too challenging. Midterm and final weren't that hard but he barely curves. He has a thick accent but I love his enthusiasm and personality

Test are pure memorization and during lecture he will often be confused by his own notes and have to pause for several minutes to figure things out. The class material is hard but doable if you spend a lot of effort studying lectures and homework which I did not.

Excellent professor. The material is difficult for sure, but Prof. Lim really cares and tries his hardest to help you succeed. Tests are largely memorization-based, which is unfortunate, but the grading criteria is really generous in my opinion.

Math 117 is a hard course with abstract concepts. However Lim really did a great job to help His lectures are clear and he is also willing to clearify any point. Always reachable during office hour and is the most patient professor I have ever met. Trust me, he is the man who leads you to upper division math.