Chapter 7: Parametric Graphing - Texas Instruments TI-89 Manual Book

Chapter 7:
Parametric Graphing
7
Preview of Parametric Graphing.......................................................... 128
Overview of Steps in Graphing Parametric Equations ..................... 129
Differences in Parametric and Function Graphing ........................... 130
This chapter describes how to graph parametric equations on the
Before using this chapter, you should be familiar
TI-89 / TI-92 Plus.
with Chapter 6: Basic Function Graphing.
Parametric equations consist of both an
expressed as a function of the same independent variable
You can use parametric equations to model projectile motion. The
position of a moving projectile has a horizontal (
( y ) component expressed as a function of time (
y(t) = v t sin q – (g/2)tñ
0
The graph shows the path of the projectile over time, assuming
that only uniform gravity (no drag forces, etc.) is acting on the
projectile.
x and y component, each
) and vertical
x
t ). For example:
(x(t),y(t))
x(t) = v t cos q
0

Chapter 7: Parametric Graphing

t .
127