At first you won't see a graph in this applet. Begin by studying the information given and see if you can determine what the graph will look like to the left of the vertical lines, between the vertical lines, and to the right of the vertical lines.
Once you've formed a mental image for each part of the graph, move the slider marked delta and the applet will begin to draw the graph of the function.
How did you do?
If you'd like to analyze the function yourself, it is .