This applet can be used to demonstrate the concept of Domain and Range of a function.
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[*] Click on a button to select one of the three functions.
[*] Drag the "domain" slider. A vertical ray will scan the viewing window and will project the intersection point of the ray and the function to the x-axis. The domain appears as red interval(s) on the x-axis.
[*] Drag the "range" slider. A horizontal ray will scan the viewing window and will project its intersection points with the function to the y-Axis. The range appears as green interval(s) on the y-axis.
