Texas Instruments Voyage 200 User Manual

862 Appendix A: Functions and Instructions
real( list1 ) ⇒
⇒⇒
⇒ list
Returns the real parts of all elements.
real({a+ i ù b,3, i }) ¸ {a 3 0}
real( matrix1 ) ⇒
⇒⇒
⇒ matrix
Returns the real parts of all elements.
real([a+ i ù b,3;c, i ]) ¸ [
a 3
c 0
]
4
44
4Rect MATH/Matrix/Vector ops menu
vector 4
44
4Rect
Displays vector in rectangular form [x, y, z]. The
vector must be of dimension 2 or 3 and can be a
row or a column.
Note:
4
44
4Rect is a display-format instruction, not a
conversion function. You can use it only at the
end of an entry line, and it does not update
ans.
Note: See also 4
Polar.
[3,pà4,pà6]4Rect ¸
[
3ø ‡2
4
3
ø ‡2
4
3
ø ‡3
2
]
[a,
b,c] ¸ [aø cos(b)ø sin(c)
a
ø sin(b)ø sin(c) aø cos(c)]
complexValue 4
44
4Rect
Displays complexValue in rectangular form a+b i .
The
complexValue can have any complex form.
However, an r
e
i q
entry causes an error in Degree
angle mode.
Note: You must use parentheses for an (rq)
polar entry.
In Radian angle mode:
4 e ^(p/3)4Rect ¸ 4ø e
p
3
(4
p/3)4Rect ¸ 2+2ø 3ø i
In Gradian angle mode:
(1100)4Rect ¸ i
In Degree angle mode:
(460)4Rect ¸ 2+2ø 3ø i
Note: To type 4
44
4Rect from the keyboard, press
2 for the 4
44
4 operator. To type , press 2’.
ref() MATH/Matrix menu
ref( matrix1 [, tol ]) ⇒
⇒⇒
⇒ matrix
Returns the row echelon form of matrix1 .
Optionally, any matrix element is treated as zero
if its absolute value is less than
tol . This tolerance
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,
tol is ignored.
• If you use ¥¸ or set the mode to
Exact/Approx=APPROXIMATE, computations
are done using floating-point arithmetic.
• If tol is omitted or not used, the default
tolerance is calculated as:
5Eë 14 ù max(dim( matrix1 ))
ù rowNorm(
matrix1 )
Note: See also rref().
ref([ë 2,ë 2,0,ë 6;1,ë 1,9,ë 9;ë 5,
2,4,
ë 4]) ¸






1 ë 2/5 ë 4/5 4/5
0 1 4/7 11/7
0 0 1
ë 62/71
[a,b,c;e,f,g]
!m1 ¸
[]
a b c
e f g
ref(m1) ¸








1
f
e
g
e
0 1
a
øgì cøe
a
øfì bøe

Texas Instruments Voyage 200 Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Blue
Display resolution	128 x 240 pixels