This applet can be used to demonstrate the concept of Domain and Range of a function.[br][list][br][*]Click on a button to select one of the three functions.[br][*]Drag the 'domain' slider. [br]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.[br][*]Drag the 'range' slider. [br] 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.[/list]