Texas Instruments TITANIUM TI-89 User Manual
Page 345

Polar Graphing
345
ƒ
9
– or –
8 Í
to set
Coordinates = POLAR
. If
Coordinates = RECT
, the polar equations will be graphed
properly, but coordinates will be displayed as x and y.
When you trace a polar equation, the q coordinate is shown even if
Coordinates = RECT
.
Exploring a Graph
Exploring a Graph
Exploring a Graph
Exploring a Graph
As in function graphing, you can explore a graph by using the following tools. Any
displayed coordinates are shown in polar or rectangular form as set in the graph format.
Tool
For Polar Graphs:
Free-Moving
Cursor
Works just as it does for function graphs.
„
Zoom
Works just as it does for function graphs.
•
Only
x
(
xmin
,
xmax
,
xscl
) and
y
(
ymin
,
ymax
,
yscl
)
Window variables are affected.
•
The
q
Window variables (
q
min
,
q
max
,
q
step
) are not
affected unless you select
6:ZoomStd
(which sets
q
min = 0
,
q
max = 2
p
, and
q
step =
p
/24
).