19990401
5-2-8
Controlling What Appears on a Graph Screen
# You must specify two different points for box
zoom, and the two points cannot be on a straight
line vertically or horizontally from each other.
○ ○ ○ ○ ○
Example
Graph
y
= (
x
+ 5)(
x
+ 4)(
x
+ 3), and then perform a box zoom.
Use the following V-Window settings.
Xmin = –8,
Xmax = 8,
Xscale = 2
Ymin = – 4,
Ymax = 2,
Yscale = 1
Procedure
1
m
GRPH
•
TBL
!
K
(V-Window)
-
i
w
i
w
c
w
c
-
e
w
c
w
b
w
i
3
(TYPE)
b
(Y=)
(
v
+f)(
v
+e)
(
v
+d)
w
5
(DRAW)
2
2
(ZOOM)
b
(Box)
3
d
~
d
w
4
d
~
d
,
f
~
f
w
Result Screen