Derivative was only compiled into high school textbooks in 2003. Generally, the post-80s students are senior three students in these two years, and some of them may have studied derivatives after 80s, but they didn't study before 80s.

The derivative of high school mathematics is elective one, chapter two, elective two and chapter three. Derivative is an important basic concept in calculus. The limit of the quotient between the increment of the dependent variable and the increment of the independent variable when the increment of the independent variable tends to zero.