Texas Instruments PLUS TI-89 - Manual (Page 493)

476 Appendix A: Functions and Instructions
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 476 of 132
ord() MATH/String menu
ord( string ) ⇒ integer
ord( list1 ) ⇒
list
Returns the numeric code of the first
character in character string
string , or a list
of the first characters of each list element.
See Appendix B for a complete listing of
character codes.
ord("hello") ¸ 104
char(104) ¸ "h"
ord(char(24)) ¸ 24
ord({"alpha","beta"}) ¸
{97 98}
Output CATALOG
Output row , column , exprOrString
Displays exprOrString (an expression or
character string) on the Program I/O screen
at the text coordinates (
row , column ).
An expression can include conversion
operations such as
4 DD and 4 Rect . You can
also use the 4 operator to perform unit and
number base conversions.
If Pretty Print = ON , exprOrString is “pretty
printed.”
From the Program I/O screen, you can press
‡ to display the Home screen, or a program
can use
DispHome .
Program segment:
©
:RandSeed 1147
:ClrIO
:For i,1,90,10
: Output i, rand(100),"Hello"
:EndFor
©
Result after execution:
P 4 Rx() MATH/Angle menu
P 4 Rx( rExpression , qExpression ) ⇒
expression
P 4 Rx( rList , qList ) ⇒ list
P 4 Rx( rMatrix , qMatrix ) ⇒
matrix
Returns the equivalent x-coordinate of the
(r,
q) pair.
Note: The q argument is interpreted as either
a degree or radian angle, according to the
current angle mode. If the argument is an
expression, you can use ó or ô to override the
angle mode setting temporarily.
In Radian angle mode:
P 4Rx(r,q) ¸ cos( q)ø r
P 4Rx(4,60¡) ¸ 2
P 4Rx({ë 3,10,1.3},{p/3,ë p/4,0})
¸
{
л 3/2 5ш ‡2 1.3
}
P 4 Ry() MATH/Angle menu
P 4 Ry( rExpression , qExpression ) ⇒
expression
P 4 Ry( rList , qList ) ⇒ list
P 4 Ry( rMatrix , qMatrix ) ⇒
matrix
Returns the equivalent y-coordinate of the
(r,
q) pair.
Note: The q argument is interpreted as either
a degree or radian angle, according to the
current angle mode. If the argument is an
expression, you can use ó or ô to override the
angle mode setting temporarily.
In Radian angle mode:
P 4Ry(r,q) ¸ sin( q)ø r
P 4Ry(4,60¡) ¸ 2ø ‡3
P 4Ry({ë 3,10,1.3},{p/3,ë p/4,0})
¸
{
л 3ш ‡3
2
л 5ш ‡2 0.
}