Texas Instruments TI-73 用户手册

Chapter 9: Function Graphing     

7309ENG.DOC   CH 9 Function Graphing, English   Julie Hewlett   Revised: 07/29/98 12:14 PM   Printed: 05/19/99

9:01 AM   Page 183 of 24

2. Select the 

ZBox 

function and

return to the function

graph.

(

3. Move the cursor to one

corner of the box you want

to define.

" ! $ # b

4. Move the cursor to the

corner diagonally opposite

from the first one.

" ! $ #

5. Replot the graph.

b

 

Zoom In and Zoom Out   (

 

 magnifies the graph around the cursor location.

 displays a greater portion of the graph, centered on

the cursor location, to provide a more global view. (The

procedure is the same for both.)
After a 

 or 

 operation is selected, move the

cursor, as necessary, and press b to select the new center

point. Repeat the operation until another operation is selected

or you exit the Graph screen.

1. Display the graph of a

selected function (the

example shows 

).

(

³

The cursor is in the

center of the new screen.

Cursor changes

 to a small square.