Differences In 3D And Function Graphing - Texas Instruments TI-89 Manual Book

Differences in 3D and Function Graphing

Setting the
Graph Mode
Defining 3D
Equations on the
Y= Editor
Tip: You can use the Define
command from the Home
screen (see Appendix A) to
define functions and
equations for any graphing
mode, regardless of the
current mode.
Selecting the
Display Style
This chapter assumes that you already know how to graph y(x)
functions as described in Chapter 6: Basic Function Graphing.
This section describes the differences that apply to 3D
equations.
Use 3 to set
Graph = 3D
Window variables. The Y= Editor and the Window Editor let you
enter information for the current
The Y= Editor maintains an independent function list for each
mode setting. For example, suppose:
¦
In FUNCTION graphing mode, you define a set of
You change to graphing mode and define a set of
3D
equations.
¦
When you return to
are still defined in the Y= Editor. When you return to
mode, your equations are still defined.
z(x,y)
Because you can graph only one 3D equation at a time, display styles
are not available. On the Y= Editor,
For 3D equations, however, you can use:
ƒ
9
or
— —
¥ Í
TI-89:
: ¥
TI-92 Plus F
to set the format to
Style
to "Changing the Axes and Style Formats" on page 165.
before you define equations or set
mode setting only.
Graph
graphing mode, your
FUNCTION
Style toolbar menu is dimmed.
or
WIRE FRAME HIDDEN SURFACE
Chapter 10: 3D Graphing
You can define 3D
equations for z1(x,y)
through z99(x,y).
Graph
y(x) functions.
z(x,y)
functions
y(x)
3D graphing
. Refer
157