Unit 4

Read the following sections in Chapter 3:

Section 3.4 Composition of Functions

Section 3.7 Inverse Functions.

You should attempt the exercises in the book as indicated below.

These exercises help to establish an understanding of the concepts involved. If necessary, reread the examples and exercises solved in the book. The answers are at the end of the book.

Section 3.4 exercises: 1, 11, 21, 31, 41, 51, 61, 71, 81, 91, 93, 97

Section 3.7 exercises: 1, 11, 21, 31, 41, 43, 47

You are allowed to use the book and other resources to answer the problems. You are welcome to ask about these in the Course Forum.

Optional Video Resources

Access this online resource for additional instruction and practice.

Mathispower4u. (2010, July 15). Composite functions [Video file]. Retrieved from

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Mathispower4u. (2012, June 11). Ex: Intro composite function notation application problem [Video file]. Retrieved from

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Mathispower4u. (2012, June 11). Ex: Evaluate composite functions from graphs [Video file]. Retrieved from

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Mathispower4u. (2012, June 11). Ex: Decompose functions [Video file]. Retrieved from

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Mathispower4u. (2011, December 19). Ex 1: Composite function values [Video file]. Retrieved from

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Mathispower4u. (2010, June 4). Inverse functions [Video file]. Retrieved from

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Mathispower4u. (2012, June 6). Determine if a relation given as a table is a one-to-one function [Video file]. Retrieved from

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Mathispower4u. (2012, June 18). Ex: Function and inverse function values using a graph [Video file]. Retrieved from

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Mathispower4u. (2012, June 18). Ex: Restrict the domain to make a function 1 to 1, then find the inverse [Video file]. Retrieved from

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