Texas Instruments TI-89 Titanium Short User Manual page 263

Unarchiv
CATALOG
var1
Unarchiv
Moves the specified variables from the user data
archive memory to RAM.
You can access an archived variable the same as
you would a variable in RAM. However, you
cannot delete, rename, or store to an archived
variable because it is locked automatically.
To archive variables, use
unitV()
MATH/Matrix/Vector ops menu
vector1
unitV(
Returns either a row- or column-unit vector,
depending on the form of
vector1
single-column matrix.
Unlock
CATALOG
var1
[,
Unlock
Unlocks the specified variables.
Note: The variables can be locked using the
command.
Lock
variance()
MATH/Statistics menu
[
list
variance(
Returns the variance of
Each
freqlist
consecutive occurrences of the corresponding
element in
Note:
matrix1
variance(
Returns a row vector containing the variance of
each column in
Each
freqmatrix
consecutive occurrences of the corresponding
element in
Note:
Appendix A: Functions and Instructions
[, var2 ] [, var3 ] ...
Archive
) ⇒
vector
vector1
must be either a single-row matrix or a
var2 , var3
][ ]
...
) ⇒
]
, freqlist expression
.
list
element counts the number of
.
list
list must contain at least two elements.
⇒
[ ]
, freqmatrix
)
.
matrix1
element counts the number of
.
matrix1
must contain at least two rows.
matrix1
10!arctest ¸
Archive arctest ¸
5ù arctest ¸
15!arctest ¸
.
N
Unarchiv arctest ¸
15!arctest ¸
unitV([a,b,c]) ¸
[
.
unitV([1,2,1]) ¸
unitV([1;2;3]) ¸
variance({a,b,c}) ¸
variance({1,2,5,ë 6,3,ë 2}) ¸
variance({1,3,5},{4,6,2}) ¸
matrix
variance([1,2,5;ë 3,0,1;
.5,.7,3]) ¸
variance([L1.1,2.2;3.4,5.1;
L2.3,4.3],[6,3;2,4;5,1]) ¸
a b
añ +bñ +cñ añ +bñ +cñ
añ -aø (b+c)+bñ -bø c+cñ
[4.75
[3.91731,2.08411]
10
Done
50
Done
15
c
]
añ +bñ +cñ
‡6 ‡6 ‡6
[ ]
6 3 6
 
‡14
14
 
‡14
 
7
 3ø ‡14 
14
3
31/2
68/33
1.03 4]
257