The difficulty of exams is ridiculous. All of the quizzes and midterms are pretty easy. The only thing you need to do is to understand what the equations mean and finish the homework. However the final is EXTREMELY hard, requiring lots of thoughts that you cant learn from book or lecture. Please don't be astonished when you found that you get full points in midterms　(as I did) but failed to complete half of questions in final.
Schroeder你妈死了

I have to say that you will learn a lot from taking his class, especially go to his office hours. he can find so many different approaches to help you understand the materials. Midterms are pretty easy, Final is super difficult. He wants people to fully understand all the content in the textbook. I have to say that this professor is a super genius, and he cares about students especially if you want to get it a try. I personally really really appreciated him to be my 142 professor. My recommendation is: read the book, do the homework problems by yourself even though homework is not count towards to your grade. (DO NOT TRY TO LEARN FROM THE ANSWER KEY. DO BY YOURSELF!) ask him about materials you don't understand. Final is hard, but he curves. average for us was 30% for the final. Reading the book and trying to learn things on your own is not a good idea for his final. I suggest to go to his lecture and his office hours.