**Learning objectives**

- Recognize power law function in graphical or algebraic form
- Recognize periodic functions in graphical, numerical, or algebraic form
- Model appropriate periodic data in the form using Center value, Amplitude, Period, and Delay.

**Before class**

- Read Hughes-Hallett 1.9 and 1.10.
- Ponder problems 1.9.1,2,3,4,6,8,10,12,16,18; 1.10.12,14,18,20,22,28.
- Consult the main points of the lesson and some review.
- See pages 15-17 on periodic functions.

**In class**

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