Set of the end points of the ordered pairs of a function.

### Notation

The range of a function *f* is noted as Range(*f*) and is read as “the range of *f*“.

### Example

This graph represents the step function defined in \(\mathbb{R}\) in the relation *f*(*x*) = 0.5[*x*] + 0.5. Its domain is \(\mathbb{R}\) and its range is: {…, −2.5; −2; −1.5; −1; −0.5; 0; 0.5; 1; 1.5; 2; 2.5; …}.