Texas Instruments TITANIUM TI-89 - Manual (Page 854)

854 Appendix A: Functions and Instructions
complexValue 4444Polar
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 tanê(3/4)) ø 5
(4p/3)4Polar ¸ 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90ìtanê(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,л 7})
¸
{26 л 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 ¸