In order for a VIEWING RECTANGLE to be meaningful, a graph must already be displayed on the screen. If you do not know how to enter and graph a function, go to Graphing a Function. For example, the function = is graphed below in a standard VIEWING RECTANGLE, [-10,10,1] by [-10,10,1].
To manually change the VIEWING RECTANGLE, press the WINDOW key. Below are the current standard window, a new window of [-2,6,1] by [-3,5,1], and the resulting graph.
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