Texas Instruments TI-89 Titanium User Manual page 303

Variable Description
xscl, yscl Distance between tick marks on the x and y axes.
xres Sets pixel resolution (1 through 10) for function graphs.
The default is 2.
•
•
To turn off tick marks, set
resolution but may reduce the graphing speed.
Changing the Values
From the Window Editor:
1. Move the cursor to highlight the value you want to change.
2. Do any of the following:
• Type a value or an expression. The old value is erased when you begin typing.
– or –
Press M to clear the old value; then type the new one.
•
– or –
Press A or B to remove the highlighting; then edit the value.
•
Values are stored as you type them; you do not need to press ¸. ¸ simply
moves the cursor to the next Window variable. If you type an expression, it is evaluated
when you move the cursor to a different Window variable or leave the Window Editor.
Basic Function Graphing
At 1, functions are evaluated and graphed at each pixel
along the x axis.
At 10, functions are evaluated and graphed at every 10th
pixel along the x axis.
and/or
xscl=0
. Small values of
yscl=0
improve the graph's
xres
300