Learn to find the values the function is undefined, then write domain

The video tutorial explains when a function is undefined, focusing on the condition where the denominator equals zero. It identifies that the function is undefined when x equals 16. The tutorial also covers how to write the domain of the function, which includes all real numbers except x equals 16, using interval notation.

What is the significance of negative infinity in the context of the domain?

Why is it important to understand the concept of domain in this class?