top of page
Range (Functions)
See It in Action
Two examples of the idea done right—and one common look-alike that is not right.
EXAMPLE
EXAMPLE
NON-EXAMPLE
Definition
The range of a function is all the possible results, or outputs (often represented by y or f(x), you can get when you put different numbers into the function.
Think of it like this:
Imagine you have a function like f(x) = x^2. If you put different numbers in for x, you get different results. For example, if you put in 2, you get 4; if you put in -3, you get 9.
With this function, you’ll only get positive numbers or zero as results because squaring any number can never give a negative number.
So, the range is just the set of all possible answers you can get from the function.
Video
bottom of page