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 91 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 91 of 22

 While tracing, you can press b to adjust the graph screen so that the

trace cursor location becomes the center of a new graph screen, even if you have moved
the cursor beyond the top or bottom of the display. In effect, this is vertical panning.

To stop tracing and restore the free-moving cursor, press : or 6.

To resume tracing, select 

 from the 

GRAPH

 menu. If Smart Graph has not replotted

the graph (Chapter 5), the trace cursor is at the point where you stopped tracing.

The standard TI

-86 graph screen displays the portion of the xy plane defined by the values

stored to the window variables. With the 

GRAPH

 

ZOOM

 menu items, you can change some

or all of the window variable values and redisplay the graph, usually with one keystroke. As
a result, a smaller or larger portion of the xy plane is displayed.

To view the current window
variable values, select  

from the 

GRAPH

 menu.