Texas Instruments TI-89 Titanium User Manual page 750

5. Set the unit to 3D graph mode, turn on the
axes for graph format, and set the
Window variables to:
eye= [20,70,0]
x= [ 2,2,20]
L
y= [ L 2,2,20]
z= [ 1,2]
L
ncontour= [5]
6. In the
Y=Editor
@ 8 Í
and set the Graph Format variables to:
Axes= ON
Labels= ON
Style= HIDDEN SURFACE
Calculating and drawing the graph
Note:
takes about three minutes.
7. Graph the modulus surface.
The 3D graph is used to visually display a
picture of the roots where the surface
touches the
xy
8. Use the Trace tool to explore the function
values at
x=1
Activities
, press:
plane.
and .
y=0
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