The control window in this demo includes two elements: the interval x and the function f(x).
Each time you change the information in a text box in the control window, you must press Enter for the change to take effect.
For example, suppose you wanted to view the graph from x = -1 to 2 instead of -1 to 1. To do this, you would type in "2" in the text box for the upper bound of x and press Enter.
In this demo, you have the option of changing the bounds on x, the resolution for x, and the expression for the function f(x). (See EXAMPLES at the bottom of this page for a list of some useful built-in functions.)
To save the altered demo (don't worry, this won't overwrite the old one), select Show Applet Tag under Demo in the Control Window. Copy the HTML code that appears, and paste it in your response to a homework assignment or discussion. This will create a button in your response that leads to your version of the demo.