Texas Instruments TITANIUM TI-89 User Manual
Page 352
Parametric Graphing
352
Standard values (set when you select
6:ZoomStd
from the
„
Zoom
toolbar menu) are:
You may need to change the standard values for the
t
variables (
tmin
,
tmax
,
tstep
) to
ensure that enough points are plotted.
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.
Note:
During a trace, you can also evaluate
x(t)
and
y(t)
by typing the
t
value and
pressing
¸. You can use QuickCenter at any time during a trace, even if the cursor is
still on the screen.
xscl, yscl
Distance between tick marks on the x and y axes.
tmin = 0
xmin =
L
10.
ymin =
L
10.
tmax = 2
p
(6.2831853... radians
or 360 degrees)
xmax = 10.
ymax = 10.
tstep =
p
/24
(.1308996... radians
or 7.5 degrees)
xscl = 1.
yscl = 1.
Tool
For Parametric Graphs:
Free-Moving
Cursor
Works just as it does for function graphs.
Variable
Description