Texas Instruments TI89TITANIUM User Manual - Page 854
polyEval, PopUp, In Radian angle mode
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complexValue 4Polar In Radian angle mode: Displays complexVector in polar form. • Degree angle mode returns (rq). • Radian angle mode returns reiq. 3+4i 4Polar ¸ (4p/3)4Polar ¸ eiø(p2 ì tanê(3/4))ø5 i øp e 3 ø4 complexValue can have any complex form. However, an reiq entry causes an error in Degree angle mode. Note: You must use the parentheses for an (rq) polar entry. In Gradian angle mode: 4i 4Polar ¸ In Degree angle mode: (4100) 3+4i 4Polar ¸ (590ìtanê(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} 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. PopUp {"1990","1991","1992"},var1 ¸ 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. 854 Appendix A: Functions and Instructions