User Manual

TI-83 Plus Activities 582

4. Press

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

. 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

. After the graph is plotted, press

to move near the

point on the ferris wheel where the paths cross. Notice the values of

, and