The subject I liked to study

Like most students, I do not like to study. I am not a very applied student, but if I had to choose a topic that I like, I would choose "derivatives" without thinking twice. This topic belongs to the topic of differential and integral calculus, which I give a second time. Undoubtedly the "derivative" is a topic that I like a lot, in classes they left us solving problems and this towards the most entertaining classes, making time fly by. Derivatives is an issue that is passed in the second year of college. I do not consider it a difficult subject, but first year students are always warned that it is not easy.
Although I really like this subject, the issue that follows hate with all my soul. It is a question of "integrals", it is a matter of reversing the derivative resolution process, but with so many ways of solving it, my mind is blocked, for this matter reprobate differential and integral calculus, but I hope this year can approve without any Problem and even avoiding the final exam.