What do musicians and mathematicians have in common? Compositions! Learners review function composition in the previous video in a series of 29, and expand that review to include the domain of the composition. The instructor uses rational expressions to create the compositions.

Concepts

composite functions, compositions, domain

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Additional Tags

math

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Instructional Ideas

• Present problems for pupils to complete prior to watching the video; ask them to use the video to check their work

Classroom Considerations

• Requires a strong understanding of simplifying rational expressions

• This video is hosted on YouTube

Pros

• The video uses color to help explain the substitution used to create the composition
• Presents a complete explanation including possible situation

Cons

• Does not include an explanation of rules