When done, press @EXIT.

Press @CANCL to return to the PLOT WINDOW environment.

Change the Step data to read: Step Indep: 20 Depnd: 16

Press @ERASE @DRAW to see the surface plot. Sample views:

When done, press @EXIT.

Press @CANCL to return to PLOT WINDOW.

Press $, or L@@@OK@@@, to return to normal calculator display. Try also a Fast 3D plot for the surface z = f(x,y) = sin (x2+y2)

Press „ô, simultaneously if in RPN mode, to access the PLOT SETUP window.

Press ˜and type ‘SIN(X^2+Y^2)’ @@@OK@@@.

Press @ERASE @DRAW to draw the slope field plot. Press @EXIT @EDIT L @)LABEL @MENU to see the plot unencumbered by the menu and with identifying labels.

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