How to determine the domain of a function with restrictions interval notation

The video tutorial explains how to determine the domain of functions using interval notation, focusing on reciprocal and square root functions. It highlights the importance of identifying 'bad' numbers, such as those that result in division by zero or negative square roots, and demonstrates how to exclude these from the domain. The tutorial provides examples and uses number lines to illustrate the concepts, offering both interval and set notation for clarity.

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