Cách sử dụng
The word "function" refers to the purpose or job that something has, or the way something works. For example, a pen's function is to write, a car's function is to transport people, and a watch's function is to tell time. In math, a function is a way of expressing a relationship between two things, such as the height of a ball and the time it takes to fall. Overall, the word "function" is used to describe how things work or what their specific purpose is.