Graph the piecewise function,

A function must be entered into in order to obtain its graph. Press the key.  The resulting screen should look like the one below:

If any of the lines are not blank, move the cursor using the UP or DOWN ARROW keys to the line and press the CLEAR key.  If any of Plot1, Plot2, or Plot3 are highlighted, that Plot must be turned off before proceeding.  To turn a Plot on or off, click here to go to Scatterplot.  

To graph the function, we enter the first part with its domain restriction in . To do this enter x^2 - 4(x. Then press  2nd MATH to get the TEST menu. Select 4:. Next enter -2)(x .Then press  2nd MATH to get the TEST menu once again. Select 6:. Then enter 2) . The result should look as follows:

Now we enter the 2nd part of the function with its restriction in . Arrow down to and enter x-2(x. Press 2nd MATH to get the TEST menu. Select 3:< . Next enter 2) . The screen will now look like the image below:

Now press Zoom, then 6.  The graph belows shows plotted in the VIEWING RECTANGLE [-10,10,1] X [-10,10,1].  This standard VIEWING RECTANGLE is obtained by setting it manually with the WINDOW key or by ZOOM 6:ZStandard. 

© 2007, Macon State College.  All rights reserved.