After passing Calculus I with a C in college about 8-9 years ago, I found this site and started working with his examples. I ended up passing Calculus II (rega

After passing Calculus I with a C in college about 8-9 years ago, I found this site and started working with his examples. I ended up passing Calculus II (regarded at the "hardest" math class at my college) with a B+. Highly recommended!