Texas Instruments TI-89 Manual Book page 526

sum(matrix1[, start[, end]])
Returns a row vector containing the sums of
the elements in the columns in
and
Start
range of rows.
switch()
CATALOG
switch([integer1])
Returns the number of the active window.
Also can set the active window.
Note:
Window 1
right or bottom.
If
integer1
number.
If
integer1
returns the previously active window
number.
If
integer1
returns the previously active window
number.
If
integer1
returns the previously active window
number.
is ignored if the
integer1
displaying a split screen.
T (transpose)
MATH/Matrix menu
matrix1 î
Returns the complex conjugate transpose of
.
matrix1
matrix
matrix1
are optional. They specify a
end
integer
is left or top;
Window 2
= 0, returns the active window
= 1, activates window 1 and
= 2, activates window 2 and
is omitted, switches windows and
TI-89 / TI-92 Plus
matrix
sum([1,2,3;4,5,6]) ¸[5
sum([1,2,3;4,5,6;7,8,9]) ¸
.
sum([1,2,3;4,5,6;7,8,9],2,3)
¸
is
switch()
¸
is not
[1,2,3;4,5,6;7,8,9]! mat1 ¸
mat1 î ¸
[a,b;c,d]! mat2 ¸
mat2 î ¸
[1+i,2+i;3+i,4+i]! mat3 ¸
mat3 î ¸
Appendix A: Functions and Instructions
7 9]
[12 15 18]
[11,13,15]
1 2 3
4 5 6
7 8 9
1 4 7
2 5 8
3 6 9
a b
[ ]
c d
a c
[ ]
b d
1+i 2+i
[ ]
3+i 4+i
1ì i 3ì i
[ ]
2ì i 4ì i
509