Limit is an important concept in mathematics, which is widely used in computational mathematics. Limit thought is an important thought in modern mathematics, and mathematical analysis is a subject that studies functions with the concept of limit and limit theory (including series) as the main tools.

In computational mathematics, limit can be used to solve some complex problems, such as finding the derivative of a function at a certain point, finding the integral of a function at a certain point, finding the limit value of a function at a certain point and so on.