Texas Instruments TI-89 Titanium Short User Manual page 234

4Rect
MATH/Matrix/Vector ops menu
vector 4Rect
Displays
vector must be of dimension 2 or 3 and can be a
row or a column.
Note:
conversion function. You can use it only at the
end of an entry line, and it does not update
Note: See also 4
complexValue
4Rect
Displays
The complexValue
However, an r
angle mode.
Note: You must use parentheses for an (r q)
polar entry.
ref()
MATH/Matrix menu
matrix1 [ tol
ref( ,
Returns the row echelon form of
Optionally, any matrix element is treated as zero
if its absolute value is less than
is used only if the matrix has floating-point
entries and does not contain any symbolic
variables that have not been assigned a value.
Otherwise,
• If you use ¥ ¸ or set the mode to
Exact/Approx=APPROXIMATE
are done using floating-point arithmetic.
• If
tol
tolerance is calculated as:
ë 14 ù max(dim(
5
E
ù rowNorm(
Note: See also
remain()
MATH/Number menu
expression1
remain(
list1
remain( ,
matrix1
remain(
Returns the remainder of the first argument with
respect to the second argument as defined by the
identities:
remain(x,0)
remain(x,y)
228
in rectangular form [x, y, z]. The
vector
is a display-format instruction, not a
4Rect
.
Polar
in rectangular form a+b
complexValue
can have any complex form.
i q
e
entry causes an error in Degree
) ⇒
] matrix
is ignored.
tol
is omitted or not used, the default
matrix1
))
matrix1
)
rref().
) ⇒
expression2
,
) ⇒
list2 list
) ⇒
matrix2 matrix
,
x
xì yùiPart(x/y)
[3, pà4, pà6]4Rect ¸
[a, b, c] ¸[aø cos(b)ø sin(c)
.
ans
In Radian angle mode:
i .
e
4
(4 p/3)4Rect ¸
In Degree angle mode:
(4 60)4Rect ¸
Note: To type
2
2
ref([ë 2,ë 2,0,ë 6;1,ë 1,9,ë 9;ë 5,
2,4,ë 4]) ¸
.
matrix1
. This tolerance
tol
[a,b,c;e,f,g]!m1 ¸
, computations
ref(m1) ¸
expression remain(7,0) ¸
remain(7,3) ¸
remain(ë 7,3) ¸
remain(7,ë 3) ¸
remain(ë 7,ë 3) ¸
remain({12,ë 14,16},{9,7,ë 5})
¸
Appendix A: Functions and Instructions
3ø ‡2
[
4
aø sin(b)ø sin(c)
^(p/3)4Rect ¸
from the keyboard, press
4Rect
for the operator. To type , press
4
.
'

ë 2/5
1

0 1

0 0

1


0

3ø ‡2 3ø ‡3
]
4 2
aø cos(c)]
p
e
4ø
3
i
ø
2+2ø
3
ø i
2+2ø
3

ë 4/5
4/5

4/7 11/7

ë 62/71
1
 
a b c
 
e f g

f g

e e

aøgì cøe
1

aøfì bøe
7
1
ë 1
1
ë 1
{3 0 1}