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Functions assign a single output for each of their inputs. In this video, we see examples of various kinds of functions.

Functions Make your code more reusable by grouping it into functions. Use parameters and return values to pass information in and out of your functions.

可汗学院提供代数函数相关的课程和练习，帮助学生掌握代数知识。

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Learn about functions and their properties in algebra on Khan Academy.

Explora funciones algebraicas con lecciones y ejercicios gratuitos en Khan Academy. Mejora tus habilidades matemáticas de manera interactiva y accesible.

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See how we can add or subtract two functions to create a new function. Just like we can add and subtract numbers, we can add and subtract functions. For example, if we had functions f and g , we …