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20050401
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
GRAPH
!3(V-WIN)-iwiwbwc
-dawdawfwJ
3(TYPE)1(Y=)(v+e)(v+b)
(v-d)w
dv+ccw
6(DRAW)
2 !2(ZOOM)2(FACT)fwfwJ
3 !2(ZOOM)3(IN)
4 f~f,d~dw
Result Screen
#You can repeat factor zoom to enlarge or
reduce a graph even further.