Chapter 9: Function Graphing 183
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.
(1
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 Zoom In and Zoom Out (
2 and 3 2 and 3
Zoom In magnifies the graph around the cursor location.
Zoom Out 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 Zoom In or Zoom Out 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 Y1=X2).
(6
³
The cursor is in the
center of the new screen.
Cursor changes
to a small square.