Sumif; System; T (Transpose) - Texas Instruments TI-NSPIRE Reference Manual

sumIf()

List Criteria SumList
sumIf( , [,
Returns the accumulated sum of all elements in List that meet the
specified Criteria. Optionally, you can specify an alternate list,
sumList, to supply the elements to accumulate.
List can be an expression, list, or matrix. SumList, if specified, must
have the same dimension(s) as List.
Criteria can be:
• A value, expression, or string. For example,
those elements in List that simplify to the value 34.
• A Boolean expression containing the symbol
for each element. For example,
elements in List that are less than 10.
When a List element meets the Criteria, the element is added to the
accumulating sum. If you include sumList, the corresponding element
from sumList is added to the sum instead.
Within the Lists & Spreadsheet application, you can use a range of
cells in place of List and sumList.
See also , page 18.
Note: countIf()

system()

Value1 Value2
system( [,
Returns a system of equations, formatted as a list. You can also
create a system by using a template.
T

T (transpose)

î ⇒
Matrix1 matrix
Returns the complex conjugate transpose of Matrix1.
80
⇒
value
])
accumulates only
34
as a placeholder
?
accumulates only those
?<10
Value3
[, [, ...]]])
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