Texas Instruments Titanium TI-89 User Manual

900 Appendix A: Functions and Instructions
ZoomStd CATALOG
ZoomStd
Sets the window variables to the following
standard values, and then updates the viewing
window.
Function graphing:
x: [ë 10, 10, 1], y: [ë 10, 10, 1] and xres=2
Parametric graphing:
t: [0, 2p, p/24], x: [ë 10, 10, 1], y:[ë 10, 10, 1]
Polar graphing:
q: [0, 2p, p/24], x: [ë 10, 10, 1], y: [ë 10, 10, 1]
Sequence graphing:
nmin=1, nmax=10, plotStrt=1, plotStep=1,
x: [ë 10, 10, 1], y: [ë 10, 10, 1]
3D graphing:
eyeq°=20, eyef°=70, eyeψ°=0
x: [ë 10, 10, 14], y: [ë 10, 10, 14],
z: [ë 10, 10], ncontour=5
Differential equations graphing:
t: [0, 10, .1, 0], x: [ë 1, 10, 1], y: [ë 10, 10, 1],
ncurves=0, Estep=1, diftol=.001, fldres=14,
dtime=0
In function graphing mode:
1.25xù cos(x)! y1(x) ¸ Done
ZoomStd
¸
ZoomSto CATALOG
ZoomSto
Stores the current Window settings in the Zoom
memory. You can use
ZoomRcl to restore the
settings.
ZoomTrig CATALOG
ZoomTrig
Displays the Graph screen, sets @x to p/24, and
xscl to p/2, centers the origin, sets the y settings
to
[ë 4, 4, .5], and updates the viewing window.
In function graphing mode:
1.25xù cos(x)! y1(x) ¸ Done
ZoomStd
¸
"
ZoomTrig
¸
+ (add) « key
expression1 + expression2 ⇒
⇒⇒
⇒ expression
Returns the sum of expression1 and expression2 .
56 ¸ 56
ans(1)+4
¸ 60
ans(1)+4
¸ 64
ans(1)+4
¸ 68
ans(1)+4
¸ 72

Texas Instruments Titanium TI-89 Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
Memory	188 KB RAM, 2.7 MB Flash ROM
Type	Graphing Calculator
Display	Monochrome
Processor	Motorola 68000
Processor Speed	12 MHz
Power Source	4 AAA batteries
Connectivity	USB
Programming	TI-BASIC, Assembly
Operating System	AMS (Advanced Mathematics Software)