Unit 09 - Parametric, Polar, and Vector Functions Concept Index Parametric EquationsVector-Valued FunctionsPolar Coordinates 9.1 Defining and Differentiating Parametric Equations 9.2 Second Derivatives of Parametric Equations 9.3 Finding Arc Lengths of Curves Given by Parametric Equations 9.4 Defining and Differentiating Vector-Valued Functions 9.5 Integrating Vector-Valued Functions 9.6 Solving Motion Problems Using Parametric and Vector-Valued Functions 9.7 Defining Polar Coordinates and Differentiating in Polar Form 9.8 Find the Area of a Polar Region 9.9 Finding the Area of the Region Bounded by Two Polar Curves