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Composite and inverse functions
Invertible functions
▶ Determining if a function is invertible
Learn how to build a mapping diagram for a finite function, and how to use this diagram to determine if the function is invertible. An invertible function has a one-to-one mapping between its domain and range. Functions that map multiple domain elements to the same range element are not invertible.
▶ Restricting domains of functions to make them invertible
Sal is given the graph of a trigonometric function, and he discusses ways in which he can change the function to make it invertible.
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