Module 23  Parametric Equations 
Introduction  Lesson 1  Lesson 2  Lesson 3  SelfTest 
Introduction 
Parametric equations can describe remarkably complicated abstract curves and they are also useful for describing practical realworld problems involving motion in two dimensions. In this module you will learn to graph and analyze parametric equations using the TI89 and you will find slopes and arc lengths of parametric curves. Lesson Index: 23.1  Parametric Graphs 23.2  Chain Rule for Parametric Equations 23.3  Arc Length of Parametric Curves After completing this module, you should be able to do the following:

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