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19990401
5-2-10
Controlling What Appears on a Graph Screen
○○○○○
Example Enlarge the graphs of the two expressions shown below five times on
both the x-and y-axis to see if they are tangent.
Y1 = (x + 4)(x + 1)( x – 3), Y2 = 3x + 22
Use the following V-Window settings.
Xmin = –8, Xmax = 8, Xscale = 1
Ymin = –30, Ymax = 30, Yscale = 5
Procedure
1 m
GRPH
•
TBL
!K(V-Window) -iwiwbwc
-dawdawfwi
3(TYPE)b(Y=)(v+e)(v+b)
(v-d)w
dv+ccw
5(DRAW)
2 2(ZOOM)c(Factor)fwfwi
3 2(ZOOM)d(In)
4 f~f,d~dw
Result Screen
#You can repeat factor zoom to enlarge or
reduce a graph even further.
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