No matter what level of Calculus you may be in, you can be called upon to know the Domain or Range of a function and also to recognize its graph.
Here are 7 key functions with graph, Domain, and Range. This video is not intended to properly introduce each of these functions. It is just a quick review of functions with some "interesting" features.
![](https://s2.save4k.ru/pic/9Bx41fcBnEw/maxresdefault.jpg)