GRAPHING Zoom Commands (Page 9 of 12)

Now let's look at the graph of y = x^3-6x^2+12. Enter this function as Y1 and graph the function using a standard window (clear the previous functions).

 Y= key. CLEAR key. Down arrow key. CLEAR key. Up arrow key.
 X,T,theta,n key. Caret key. 3 Minus key. 6 X,T,theta,n key. x-squared key.
 Plus key. 12

 ZOOM key. 6: menu selection.

Calculator screen image. Calculator screen image.

To obtain a comprehensive graph of this function, we would want to modify the viewing rectangle to see the local maximum and local minimum points (turning points) that are currently outside the window. First, let's narrow the width of the window in the x-direction by setting Xmin = -3 and Xmax = 7.

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