Texas Instruments TI-89 Manual Book page 525

string()
MATH/String menu
string(expression)
Simplifies
a character string.
Style
CATALOG
Style equanum, stylePropertyString
Sets the system graphing function
the current graph mode to use the graphing
property
equanum
the function must already exist.
stylePropertyString
" ", "
Dot Square
" ", or "
Above
Note that in parametric graphing, only the
half of the pair contains the style
information.
Valid style names vs. graphing mode:
Function:
Parametric/Polar: line, dot, square, thick,
Sequence:
3D:
Diff Equations:
Note: Capitalization and blank spaces are
optional when entering
names.
subMat()
CATALOG
subMat(matrix1[, startRow] [, startCol] [, endRow]
[, endCol])
Returns the specified submatrix of
Defaults:
row,
endCol
sum()
MATH/List menu
sum(list[, start[, end]])
Returns the sum of the elements in
and
Start
range of elements.
508 Appendix A: Functions and Instructions
string
and returns the result as
expression
.
stylePropertyString
must be an integer from 1–99 and
must be one of: "
", " ", " ", "
Thick Animate Path
".
Below
all styles
animate, path
line, dot, square, thick
none
line, dot, square, thick,
animate, path
stylePropertyString
matrix
=1, =1,
startRow startCol endRow
=last column.
expression
are optional. They specify a
end
string(1.2345) ¸
string(1+2) ¸
string(cos(x)+‡(3)) ¸
Style 1,"thick" ¸
in
equanum Style 10,"path" ¸
Note: In function graphing mode, these
examples set the style of
and to
y10(x)
Line ",
",
xt
[1,2,3;4,5,6;7,8,9]! m1 ¸
.
matrix1
subMat(m1,2,1,3,2) ¸
=last
subMat(m1,2,2) ¸
sum({1,2,3,4,5}) ¸
.
list sum({a,2a,3a}) ¸
sum(seq(n,n,1,10)) ¸
sum({1,3,5,7,9},3) ¸
"1.2345"
"cos(x) + ‡(3)"
to
y1(x) "Thick"
.
"Path"
1 2 3
4 5 6
7 8 9
4 5
[
7 8
5 6
[
8 9
"3"
Done
Done
]
]
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