Domain And Range Graph Khan Academy

Determining the domain of a function.

Domain and range graph khan academy. Or if we said y equals f of x on a graph it s a set of all the possible y values. The domain of a function you ll often hear it combined with domain and range. F of negative 1 is negative 3.

Domain and range from graph our mission is to provide a free world class education to anyone anywhere. Let s have a little bit of a review of what a function is before we talk about what it means that what the domain of a function means. And it s a fairly straightforward idea.

Negative 2 is less than or equal to x which is less than or equal to 5. So for example let s say that the number 1 is in the domain and that we associate the number 1 with the number 2 in the range. Let s say i had f of x is equal to let s say x.

Domain and range from graph our mission is to provide a free world class education to anyone anywhere. If you give me an x anywhere in between negative 2 and 5 i can look at this graph to see where the function is defined. Now the range at least the way we ve been thinking about it in this series of videos the range is set of possible outputs of this function.

So let s start with something examples. So once again this function is defined for negative 2. Khan academy is a 501 c 3 nonprofit organization.

F of negative 2 is negative 4. Domain and range from graph. But the domain of a function is just what values can i put into a function and get a valid output.