Main things you need to know on finding the domain of a rational function

The video tutorial explains how to find the domain of rational functions by setting the denominator equal to zero, as this identifies values that make the function undefined. It covers methods like factoring and inverse operations to solve for these values. The tutorial also discusses discontinuities, such as holes and asymptotes, and emphasizes the importance of understanding these concepts to avoid common mistakes. The video aims to clarify misconceptions and provide a comprehensive understanding of domain restrictions in rational functions.

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