Domain of Radical Functions

The video tutorial focuses on identifying the domain of radical expressions. It explains the importance of ensuring the radicand is positive and demonstrates solving inequalities to find the domain. The tutorial covers using interval notation and handling inequalities with negative coefficients, emphasizing the need to flip the inequality sign. Test points are used to verify solutions, and multiple examples are provided to illustrate these concepts.

What happens to the inequality sign when you divide or multiply by a negative number in an inequality?

What is the significance of using test points when determining the domain of radical functions?

In the context of the lesson, how do you determine the domain when there are two versions of a graph?