Varsamp; Warncodes(); When() - Texas Instruments TI-Nspire Reference Manual

varSamp()

,
List freqList
varSamp( [ ])
Returns the sample variance of List.
Each freqList element counts the number of consecutive occurrences
of the corresponding element in List.
List must contain at least two elements.
Note:
If an element in either list is empty (void), that element is ignored,
and the corresponding element in the other list is also ignored. For
more information on empty elements, see page 131.
,
Matrix1 freqMatrix
varSamp( [
Returns a row vector containing the sample variance of each column
in Matrix1.
Each freqMatrix element counts the number of consecutive
occurrences of the corresponding element in Matrix1.
If an element in either matrix is empty (void), that element is ignored,
and the corresponding element in the other matrix is also ignored. For
more information on empty elements, see page 131.
Matrix1 must contain at least two rows.
Note:
W

warnCodes()

warnCodes(Expr1, StatusVar)
Evaluates expression Expr1, returns the result, and stores the codes
of any generated warnings in the StatusVar list variable. If no
warnings are generated, this function assigns StatusVar an empty
list.
Expr1 can be any valid TI-Nspire™ or TI-Nspire™ CAS math
expression. You cannot use a command or assignment as Expr1.
StatusVar must be a valid variable name.
For a list of warning codes and associated messages, see page 143.

when()

Condition trueResult
when( ,
⇒
expression
Returns trueResult, falseResult, or unknownResult, depending on
whether Condition is true, false, or unknown. Returns the input if
there are too few arguments to specify the appropriate result.
Omit both falseResult and unknownResult to make an expression
defined only in the region where Condition is true.
Use an undef falseResult to define an expression that graphs only
on an interval.
when() is helpful for defining recursive functions.
110 TI-Nspire™ Reference Guide
⇒
expression
⇒
matrix
])
⇒
expression
falseResult unknownResult
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