Diag Math/Matrix Menu; Dialog Catalog; Dim Math/Matrix/Dimensions Menu - Texas Instruments TITANIUM TI-89 User Manual

diag()
MATH/Matrix menu
) ⇒ ⇒ ⇒ ⇒
list
diag(
rowMatrix
diag(
columnMatrix
diag(
Returns a matrix with the values in the argument
list or matrix in its main diagonal.
squareMatrix
diag(
Returns a row matrix containing the elements
from the main diagonal of
squareMatrix
Dialog
CATALOG
Dialog
block
EndDlog
Generates a dialog box when the program is
executed.
can be either a single statement or a series
block
of statements separated with the ":" character.
Valid
block
item in the Program Editor are
4:DropDown
The variables in a dialog box can be given values
that will be displayed as the default (or initial)
value. If ¸ is pressed, the variables are
updated from the dialog box and variable
set to
1
updated, and system variable
dim()
MATH/Matrix/Dimensions menu
) ⇒ ⇒ ⇒ ⇒
list
dim(
Returns the dimension of
) ⇒ ⇒ ⇒ ⇒
matrix
dim(
Returns the dimensions of
element list {rows, columns}.
) ⇒ ⇒ ⇒ ⇒
string
dim(
Returns the number of characters contained in
character string
810
matrix
) ⇒ ⇒ ⇒ ⇒
matrix
) ⇒ ⇒ ⇒ ⇒
matrix
) ⇒ ⇒ ⇒ ⇒
rowMatrix
squareMatrix
must be square.
options in the ... I/O, 1:Dialog menu
1:Text
, and .
7:Title
. If N is pressed, its variables are not
ok
integer
.
list
list
matrix
integer
.
string
diag({2,4,6}) ¸
[4,6,8;1,2,3;5,7,9] ¸
.
diag(ans(1)) ¸
Program listing:
:Dlogtest()
:Prgm
:Dialog
:Title
:Request
:Dropdown
,
2:Request,
:EndDlog
:EndPrgm
is
ok
is set to zero.
dim({0,1,2}) ¸
dim([1,ë 1,2;ë 2,3,5]) ¸
as a two-
dim("Hello") ¸
dim("Hello"&" there") ¸
Appendix A: Functions and Instructions






[4 2 9]
"This is a dialog box"
"Your name",Str1
"Month you were born",
seq(string(i),i,1,12),Var1
2 0 0


0 4 0

0 0 6
4 6 8


1 2 3

5 7 9
3
{2 3}
5
11