Texas TI-86 用户手册

05FUNC.DOC   TI-86, Chap 5, US English   Bob Fedorisko   Revised: 02/13/01 2:22 PM   Printed: 02/13/01 3:01 PM   Page 81 of 14

 on the top line of the equation editor displays the on

àoff status of each stat

plot (Chapter 14). When a plot name is highlighted on this line, the plot is on.

To change the on

àoff status of a stat plot from the equation editor, press $, ", and ! to

place the cursor on 

, 

, or 

, and then press b.

The graph screen window represents the portion of the
coordinate plane displayed on the graph screen. By setting
window variables, you can define the graph screen window
boundaries and other attributes.

, 

, 

, and 

 are the graph screen boundaries.

 (x scale) is the number of units represented by the distance from one tick mark to the next

tick mark on the x-axis.

 (y scale) is the number of units represented by the distance from one tick mark to the

next tick mark on the y-axis.

 sets pixel resolution for function graphs only, using integers 

 through 

.

♦ 

At 

 (the default), functions are evaluated and graphed at each pixel on the x-axis.

♦ 

At 

, functions are evaluated and graphed at every eighth pixel along the x-axis.

To remove tick marks from
both axes, set 

 and

.

Small 

 values improve

graph resolution but may
cause the TI

-

86 to plot

graphs more slowly