Calculus Is Difficult

The day after tomorrow, it will be our middle-term examination of Calculus. This subject is similar to Math, in other words, it is a part of Math. The most two important sections of Calculus are differentiation and integration by which we solve kind of problems like measuring areas and proof physics laws. At first, I think it is very hard for me, but when I study it by high school's experience, I understand it easily. Now, hope me getting a good grade in this exam.