TI -86 用户手册

06TOOLS.DOC   TI-86, Chap 6, US English   Bob Fedorisko   Revised: 02/13/01 2:23 PM   Printed: 02/13/01 3:01 PM   Page 92 of 22

06TOOLS.DOC   TI-86, Chap 6, US English   Bob Fedorisko   Revised: 02/13/01 2:23 PM   Printed: 02/13/01 3:01 PM   Page 92 of 22

Draws a box to define the graph screen

(zoom in) Magnifies the graph around the cursor by factors of 

 and 

(zoom out) Displays more of the graph around the cursor by factors of 

 and 

Displays the graph in standard dimensions; resets the default window variable values

Reverses the last zoom operation; window variables revert to previous values

Recalculates 

 and 

 to include the minimum and maximum 

 values of the

selected functions between the current 

 and 

Sets equal-size pixels on the x-axis and y-axis; adjusts window variable values in one
direction so that 

, while 

 and 

 remain unchanged; the midpoint of the

current graph (not the axes intersection) becomes the midpoint of the new graph

Sets built-in window variables appropriate for trigonometric functions in 

 mode:

 (

p à2)

Sets  

,  

,  

,  

,  

,  

,  

,  and  

Sets window variable values to display all statistical data points; adjusts 

 and 

only; applies to histograms, scatter plots, and stat plots only (Chapter 14)

Uses window variable values stored in the user-defined zoom-window variables (

)

Displays the 

ZOOM

 

FACTORS

 screen

Zooms out by a factor of  

 only; ignores 

(page 93)

Zooms out by a factor of 

 only; ignores 

Sets integer values on the axes; sets 

,   

,   

, and 

; the current

cursor becomes the center of the new graph screen after you press b

Stores current window variable values to user-defined zoom-window variables (

)

To cancel the effect of any

ZOOM

 menu item and return

to the default window variable
values, select 

.

If you graph a circle but it
appears elliptical, you can
use 

 to reset the

window variable values so
that the circle graph appears
circular.