Texas Instruments TI-89 사용자 설명서

Polar Graphing

342

•

Use the

„

Zoom

toolbar menu to zoom in or out on a portion of the graph.

•

Use the

‡

Math

toolbar menu to find derivatives, tangents, etc. Some menu items

are not available for polar graphs.

Differences in Polar and Function Graphing

This module assumes that you already know how to graph

y(x)

functions as described in

Basic Function Graphing. This section describes the differences that apply to polar
equations.

Setting the Graph Mode

Use

3 to set

Graph = POLAR

before you define equations or set Window variables.

The Y= Editor and the Window Editor let you enter information for the current

Graph

mode setting only.

You should also set the

Angle

mode to the units (RADIAN or DEGREE) you want to use

for q.

Defining Polar Equations on the Y= Editor

You can define polar
equations for r1(

)

through r99(