Texas Instruments TI-89 Voyage 200, User Manual

Page: 854 / 1008

854 Appendix A: Functions and Instructions
complexValue
4444 Polar
Displays
complexVector
in polar form.
•
Degree angle mode returns (r q ).
•
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 (r q )
polar entry.
In Radian angle mode:
3+4
i 4
Polar
¸ e
i
ø
(
p
2
ì
tan
ê
(3/4))
ø
5
(4
p
/3)
4
Polar
¸ e
i
ø p
3
ø
4
In Gradian angle mode:
4
i
4
Polar
¸
(4

100)
In Degree angle mode:
3+4
i 4
Polar
¸
(5

90
ì
tan
ê
(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)
¸
a
ø
x
ñ
+b
ø
x+c
polyEval({1,2,3,4},2)
¸
26
polyEval({1,2,3,4},{2,
ë
7})
¸
{26
ë
262}
PopUp
CATALOG
PopUp
itemList
,
var
Displays a pop-up menu containing the character
strings from
itemList
, waits for you to select an
item, and stores the number of your selection in
var
.
The elements of
itemList
must be character strings:
{
item1String
,
item2String
,
item3String
, ...}
If
var
already exists and has a valid item number,
that item is displayed as the default choice.
itemList
must contain at least one choice.
PopUp
{"1990","1991","1992"},var1
¸