Texas Instruments TI-89 Titanium Short User Manual

Appendix A: Functions and Instructions 219
PlotsOff CATALOG
PlotsOff [1] [, 2] [, 3] ... [, 9]
Turns off the specified plots for graphing. When
in 2-graph mode, only affects the active graph.
If no parameters, then turns off all plots.
PlotsOff 1,2,5 ¸ Done
PlotsOff
¸ Done
PlotsOn CATALOG
PlotsOn [1] [, 2] [, 3] ... [, 9]
Turns on the specified plots for graphing. When in
2-graph mode, only affects the active graph.
If you do not include any arguments, turns on all
plots.
PlotsOn 2,4,5 ¸ Done
PlotsOn
¸ Done
4Polar MATH/Matrix/Vector ops menu
vector 4Polar
Displays vector in polar form [r oq]. The vector
must be of dimension 2 and can be a row or a
column.
Note:
4Polar is a display-format instruction, not
a conversion function. You can use it only at the
end of an entry line, and it does not update
ans.
Note: See also 4
Rect.
[1,3.] 4Polar ¸
[x,y]
4Polar ¸
complexValue 4Polar
Displays complexVector in polar form.
• Degree angle mode returns (roq).
• Radian angle mode returns r
e
i q
.
complexValue can have any complex form.
However, an r
e
i q
entry causes an error in Degree
angle mode.
Note: You must use the parentheses for an (roq)
polar entry.
In Radian angle mode:
3+4 i 4Polar ¸ e
i
ø
(
p
2
ì tanê(3/4))
ø5
(4op/3)4Polar ¸
e
iøp
3
ø4
In Degree angle mode:
3+4 i 4Polar ¸(5o90ì tanê(3/4))
polyEval() MATH/List menu
polyEval( list1 , expression1 ) ⇒ expression
polyEval( list1 , list2 ) ⇒ expression
Interprets the first argument as the coefficient of
a descending-degree polynomial, and returns the
polynomial evaluated for the value of the second
argument.
polyEval({a,b,c},x) ¸
aø xñ +bø x+c
polyEval({1,2,3,4},2)
¸ 26
polyEval({1,2,3,4},{2,ë 7})
¸ {26 ë 262}

Texas Instruments TI-89 Titanium Specifications

General

Display Type	LCD
Display Resolution	160 x 100 pixels
CPU	Motorola 68000
CPU Speed	16 MHz
RAM	256 KB
Flash ROM	2.7 MB
Programming Language	TI-BASIC, Assembly
Power Source	4 AAA batteries
Connectivity	I/O port
Dimensions	7.5 x 3.5 x 1 inches