Texas Instruments TI-89 Voyage 200, User Manual

Page: 346 / 1008

Polar Graphing 346
During a trace, you can also evaluate
r( q )
by typing the
q
value and pressing
¸
.
Note:
You can use QuickCenter at any time during a trace, even if the cursor is still on
the screen.
…
Trace Lets you move the cursor along a graph one
q
step at a
time.
• When you begin a trace, the cursor is on the first selected
equation at
q min
.
• QuickCenter applies to all directions. If you move the
cursor off the screen (top or bottom, left or right), press
¸
to center the viewing window on the cursor
location.
• Automatic panning is not available. If you move the cursor
off the left or right side of the screen, the TI-89 Titanium /
Voyage™ 200 Graphing Calculator will not automatically
pan the viewing window. However, you can use
QuickCenter.
‡
Math
Only 1:Value , 6:Derivatives , 9:Distance , A:Tangent , and
B:Arc are available for polar graphs. These tools are
based on
q
values. For example:
•
1:Value
displays an
r
value (or x and y, depending on the
graph format) for a specified
q
value.
•
6:Derivatives
finds
dy/dx
or
dr/d q
at a point defined for
a specified q value.
Tool For Polar Graphs: