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This Definition and Domain of a Rational Expression instructional video also includes:
If a rational expression is composed of polynomial expressions, then why isn't the domain all real numbers? A concept video demonstrates the definition of a rational expression and the domain of a rational expression. Four problem videos cover examples simplifying a rational expression and determining its domain.
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Concepts
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Instructional Ideas
- Use the video to introduce rational expressions
Classroom Considerations
- Video uses symbolic notation for the set of real numbers; be sure learners can recognize the notation
- Video assumes individuals have a good grasp of factoring techniques
Pros
- Examples include denominators with both linear and quadratic expressions
- Process is shown in a step-by-step fashion
Cons
- The videos do not make use of the term undefined, which is generally used in these cases