Texas Instruments TINSPIRE Reference Guide - Page 35

deltaList, DelVar, Catalog &gt, delVoid, is less than

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deltaList() DelVar DelVar Var1[, Var2] [, Var3] ... DelVar Var. Deletes the specified variable or variable group from memory. If one or more of the variables are locked, this command displays an error message and deletes only the unlocked variables. See unLock, page 109. DelVar Var. deletes all members of the Var. variable group (such as the statistics stat.nn results or variables created using the LibShortcut() function). The dot (.) in this form of the DelVar command limits it to deleting a variable group; the simple variable Var is not affected. See @List(), page 55. Catalog > delVoid() delVoid(List1) ⇒ list Returns a list that has the contents of List1 with all empty (void) elements removed. For more information on empty elements, see page 131. det( ) det(squareMatrix[, Tolerance]) ⇒ expression Returns the determinant of squareMatrix. Optionally, any matrix element is treated as zero if its absolute value is less than Tolerance. 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, Tolerance is ignored. /· • If you use or set the Auto or Approximate mode to Approximate, computations are done using floating- point arithmetic. • If Tolerance is omitted or not used, the default tolerance is calculated as: 5EM14 ·max(dim(squareMatrix))· rowNorm(squareMatrix) Catalog > Catalog > TI-Nspire™ Reference Guide 29

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TI-Nspire™ Reference Guide
29
deltaList()
See
@
List()
, page 55.
DelVar
Catalog >
DelVar
Var1
[
,
Var2
]
[
,
Var3
] ...
DelVar
Var
.
Deletes the specified variable or variable group from memory.
If one or more of the variables are locked, this command displays an
error message and deletes only the unlocked variables. See
unLock
,
page 109.
DelVar
Var
.
deletes all members of the
Var
.
variable group (such as
the statistics
stat
.
nn
results or variables created using the
LibShortcut()
function)
.
The dot (
.
) in this form of the
DelVar
command limits it to deleting a variable group; the simple variable
Var
is not affected.
delVoid()
Catalog >
delVoid(
List1
)
⇒
list
Returns a list that has the contents of
List1
with all empty (void)
elements removed.
For more information on empty elements, see page 131.
det()
Catalog >
det(
squareMatrix
[
,
Tolerance
]
)
⇒
expression
Returns the determinant of
squareMatrix
.
Optionally, any matrix element is treated as zero if its absolute value
is less than
Tolerance
. 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,
Tolerance
is
ignored.
•
If you use
/·
or set the
Auto or Approximate
mode to Approximate, computations are done using floating-
point arithmetic.
•
If
Tolerance
is omitted or not used, the default tolerance is
calculated as:
5E
M
14
·
max(dim(
squareMatrix
))
·
rowNorm(
squareMatrix
)