2. The contents of calculus in senior high school mainly include limit, differential calculus, integral calculus and its application. Differential calculus, including the calculation of derivative, is a set of theories about the rate of change, so that the function, velocity, acceleration and slope of a curve can be discussed with a set of commonly used symbols.
3. Calculus in senior high school is an important foundation and starting point of modern mathematics. In recent decades, it has been widely used not only in the fields of physics, mechanics, chemistry, biology and other natural sciences, but also in the fields of society, economy and humanities, and has become an important research tool in these fields.