# Precalculus Examples

Step 1

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

Set-Builder Notation:

Step 2

The range is the set of all valid values. Use the graph to find the range.

Interval Notation:

Set-Builder Notation:

Step 3

Determine the domain and range.

Domain:

Range:

Step 4