Chapter 10: 3D Graphing - Texas Instruments TI-89 Manual Book

Chapter 10:
3D Graphing
10
Tip: To view the graph
along the x, y, or z axis, you
can press X , Y , or Z ,
respectively.
Tip: To switch from one
format style to the next
(skipping
IMPLICIT PLOT
press:
TI-89: j [F]
F.
TI-92 Plus:
This retains the current view
(either expanded or normal).
Note: To switch to
IMPLICIT
(via the GRAPH
PLOT
FORMATS dialog box),
press:
TI-89: ¥ Í
TI-92 Plus: ¥ F.
Preview of 3D Graphing ........................................................................ 154
Overview of Steps in Graphing 3D Equations .................................... 156
Differences in 3D and Function Graphing .......................................... 157
Moving the Cursor in 3D ....................................................................... 160
Rotating and/or Elevating the Viewing Angle..................................... 162
Animating a 3D Graph Interactively .................................................... 164
Changing the Axes and Style Formats................................................. 165
Contour Plots .......................................................................................... 167
Example: Contours of a Complex Modulus Surface ......................... 170
Implicit Plots........................................................................................... 171
Example: Implicit Plot of a More Complicated Equation ................. 173
This chapter describes how to graph 3D equations on the
TI-89 / TI-92 Plus
chapter, you should be familiar
with Chapter 6: Basic Function
Graphing.
In a 3D graph of an equation for
, a point's location is defined
z(x,y)
as shown here.
The expanded view feature lets
you examine any 3D graph in more detail. For example:
Normal view
),
To switch between normal and expanded views,
press p (multiplication key, not the letter X).
When you display a 3D graph, the expanded view is used
automatically if:
¦
You set or change the graph format style to
or
IMPLICIT PLOT
¦
The previous graph used the expanded view.
If you press a cursor key to animate the graph, the screen
switches to the normal view automatically. You cannot animate a
graph in the expanded view.
. Before using this
.

Chapter 10: 3D Graphing

Z
(x,y,z)
z
x
y
Expanded view
CONTOUR LEVELS
153