3D Graphing - Texas Instruments TI-89 Titanium Short User Manual

Steps and keystrokes
7. Select
Trace
by year. How many years (nc) does it take
the number of trees (yc) to stabilize?
Trace begins at nc=0.
nc is the number of years.
xc = nc since n is plotted on the x axis.
yc = u1(n), the number of trees at
year n.
Press ... B and A as necessary

3D Graphing

Graph the 3D equation z(x,y) = (x
using the cursor to interactively change the eye Window variable values
that control your viewing angle. Then view the graph in different graph
format styles.
Steps and keystrokes
1. Display the
mode, select
Press 3 B 5 ¸
2. Display and clear the
the 3D equation z1(x,y) = (x
Notice that implied multiplication is used in
the keystrokes.
Press 8 # , 8 ¸ ¸ c X Z 3 Y |
Y Z 3 X d e 390 ¸
3. Change the graph format to display and
label the axes. Also set
.
FRAME
You can animate any graph format style,
but
WIRE FRAME
@ 8 Í D B 2 D B 2 D B 1 ¸
Previews
. Move the cursor to trace year
dialog box. For
MODE
.
3D
Y= Editor
Style = WIRE
is fastest.
3 3
y N y
x) / 390. Animate the graph by
Graph
. Then define
3 3
y N y
x) / 390.
Display
By default, sequences use
the Square display style.
Display
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