How to determine the domain of addition of two rational functions

The video tutorial discusses the domain restrictions of a function, identifying values that make the function undefined, specifically x cannot equal 0 or 3. It explains the continuity of the function across different intervals and provides a graphical representation of these concepts. The function is continuous from negative infinity to zero, zero to three, and three to infinity, with disconnections at the points where x equals 0 and 3.

What values cannot be included in the domain of the function?

Explain why X cannot equal 0 in the context of this function.

What is the behavior of the function as it approaches the values that are not in the domain?

Describe the continuity of the function across its domain.

What does the graph of the function look like in relation to the excluded values?