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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.

In this unit, we learn about functions, which are mathematical entities that assign unique outputs to given inputs. We'll evaluate, graph, analyze, and create various types of functions.

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

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。

Algebra 1 Course: Algebra 1 > Unit 10 Introduction to piecewise functions Worked example: evaluating piecewise functions Evaluate piecewise functions Worked example: graphing piecewise functions

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Learn the skills that will set you up for success in polynomial operations and complex numbers; equations; transformations of functions and modeling with functions; exponential and logarithmic …

And the whole point of what I'm doing here is I'm going to see how this unit circle might be able to help us extend our traditional definitions of trig functions.