Most students hate and struggle in a calculus 2 course more so than they do in calculus 1 and 3 or so I read. My guess is that calculus 2 goes deeper into integration than calculus 1. Students who understand calculus 2 integration well will not struggle with double and triple integration, right? Anyway, what is your view? Why do so many students struggle in a calculus 2 course? I am learning calculus on my own with the help of an online tutor. We are going through the calculus 2 textbook one section at a time and it is challenging. I wonder what calculus 3 will be like.