HP 49g manual Find Fast3D, Values of 10 and 8 for the Step data, You can change Orientation

•	Press	, simultaneously if		in RPN mode, to		access to the PLOT
		„ô
	SETUP window.
•	Change TYPE to Fast3D. (		@CHOOS!	, find Fast3D,	@@OK@@	).
•	Press	and type ‘X^2+Y^2’		.

• Make sure that ‘X’ is selected as the Indep: and ‘Y’ as the Depnd:

	variables.
•	Press	to return to normal calculator display.
•	Press	, simultaneously if in RPN mode, to access the PLOT

WINDOW screen.

• Keep the default plot window ranges to read:

			X-Left:-1	X-Right:1
			Y-Near:-1	Y-Far: 1
			Z-Low: -1	Z-High: 1
			Step Indep: 10	Depnd: 8
	Note: The Step Indep: and Depnd: values represent the number of
	gridlines˜	to be used in the plot.@@@OK@@@The larger these number, the slower it
	is to produce the graph, although, the times utilized for graphic
	generation are relatively fast. For the time being we’ll keep the default
	values of 10 and 8 for the Step data.
	L@@@OK@@@
• Press			to draw the three-dimensional surface.		The result is a
wireframe picture of the surface with the reference coordinate system
shown„òat the lower left corner of the screen. By using the arrow keys
(			) you can change	the orientation of the	surface. The

orientationš™—@ERASEof˜@DRAWthe reference coordinate system will change accordingly. Try changing the surface orientation on your own. The following figures show a couple of views of the graph:

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