Texas Instruments TI-89 Voyage 200, Руководство пользователя, Страница: 884 / 1008

884 Appendix A: Functions and Instructions
Style
CATALOG
Style
equanum, stylePropertyString
Sets the system graphing function
equanum
in the
current graph mode to use the graphing property
stylePropertyString
.
equanum
must be an integer from 1–99 and the
function must already exist.
stylePropertyString
must be one of: "
Line
", "
Dot
",
"
Square
", "
Thick
", "
Animate
", "
Path
",
"
Above
", or "
Below
".
Note that in parametric graphing, only the
xt
half
of the pair contains the style information.
Valid style names vs. graphing mode:
Function: all styles
Parametric/Polar: line, dot, square, thick,
animate, path
Sequence: line, dot, square, thick
3D: none
Diff Equations:
line, dot, square, thick,
animate, path
Note: Capitalization and blank spaces are
optional when entering
stylePropertyString
names.
Style 1,"thick"
¸
Done
Style 10,"path"
¸
Done
Note: In function graphing mode, these
examples set the style of
y1(x)
to
"Thick"
and
y10(x)
to
"Path"
.
subMat()
CATALOG
subMat(
matrix1
[ ,
startRow
] [ ,
startCol
] [ ,
endRow
]
[ ,
endCol
] )
⇒
⇒ ⇒
⇒
matrix
Returns the specified submatrix of matrix1 .
Defaults: startRow =1, startCol =1, endRow =last
row, endCol =last column.
[1,2,3;4,5,6;7,8,9]
!
m1
¸






1 2 3
4 5 6
7 8 9
subMat(m1,2,1,3,2)
¸
[
4 5
7 8
]
subMat(m1,2,2)
¸
[
5 6
8 9
]
Sum (Sigma)
See
G
() , page 908.
sum()
MATH/List menu
sum(
list
[
, start
[
, end
]])
⇒
⇒ ⇒
⇒
expression
Returns the sum of the elements in
list
.
Start
and
end
are optional. They specify a range of
elements.
sum({1,2,3,4,5})
¸
15
sum({a,2a,3a})
¸
6
ø
a
sum(seq(n,n,1,10))
¸
55
sum({1,3,5,7,9},3)
¸
21
sum(
matrix1
[
, start
[
, end
]])
⇒ ⇒ ⇒ ⇒
matrix
Returns a row vector containing the sums of the
elements in the columns in
matrix1
.
Start
and
end
are optional. They specify a range of
rows.
sum([1,2,3;4,5,6])
¸
[5 7 9]
sum([1,2,3;4,5,6;7,8,9])
¸
[12 15 18]
sum([1,2,3;4,5,6;7,8,9],2,3)
¸
[11,13,15]