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TI-83 Plus Activities 582
4. Press
s
to graph the equations. Watch closely as they are
plotted. Notice that the ball and the ferris wheel passenger appear to
be closest where the paths cross in the top-right quadrant of the ferris
wheel.
5. Press
p
. Change the viewing window to concentrate on this
portion of the graph.
Tmin=1 Xmin=0 Ymin=10
Tmax=3 Xmax=23.5 Ymax=25.5
Tstep=.03 Xscl=10 Yscl=10
6. Press
r
. After the graph is plotted, press
~
to move near the
point on the ferris wheel where the paths cross. Notice the values of
X
,
Y
, and
T
.