Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 106

To change the selection status, move the cursor onto the
Setting Window Variables
To display the window variable values, press p. These variables define the viewing window.
The values below are defaults for Pol graphing in Radian angle mode.
qmin=0
qmax=6.2831853...
qstep=.1308996...
Xmin=L10
Xmax=10
Xscl=1
Ymin=L10
Ymax=10
Yscl=1
To ensure that sufficient points are plotted, you may want to change the q window variables.
Note:
Setting the Graph Format
To display the current graph format settings, press y .. Chapter 3 describes the format
settings in detail. The other graphing modes share these format settings.
Displaying a Graph
When you press s, the TI-84 Plus plots the selected polar equations. It evaluates R for each
value of q (from q to q
min
variables define the viewing window.
As the graph is plotted, X, Y, R, and q are updated.
Smart Graph applies to polar graphs.
Window Variables and Y.VARS Menus
You can perform these actions from the home screen or a program.
• Access functions by using the name of the equation as a variable. These function names are
available on the YVARS shortcut menu (t a).
Smallest value to evaluate
q
Largest value to evaluate (2
q
Increment between q values (
Smallest X value to be displayed
Largest X value to be displayed
Spacing between the X tick marks
Smallest Y value to be displayed
Largest Y value to be displayed
Spacing between the Y tick marks
in intervals of q
max step
sign, and then press Í.
=
)
p
pà 24)
) and then plots each point. The window
Chapter 5: Polar Graphing 99