Yuck. Those were my least favorite courses. I had such a hard time with calculus! It was the only class I got anything below a B in and I took Calculus I three times and Calculus II two times! I dropped Calculus I once took it two more times after that and still only got a C. Calculus II I ended up with a D. Dang requirements for being a Computer Science major! I have yet to use anything Calculus related in my job.