Submat; Sum (Sigma); Sum - Texas Instruments TI-NSPIRE Reference Manual

subMat()

Matrix1 startRow
subMat( [,
⇒
matrix
Returns the specified submatrix of Matrix1.
Defaults: startRow=1, startCol=1, endRow=last row, endCol=last
column.

Sum (Sigma)

sum()

, ,
List Start End
sum( [ [ ]])
Returns the sum of the elements in List.
Start and End are optional. They specify a range of elements.
, ,
Matrix1 Start End
sum( [ [
Returns a row vector containing the sums of the elements in the
columns in Matrix1.
Start and End are optional. They specify a range of rows.
TI-Nspire™ Reference Guide
startCol endRow
] [, ] [, ] [,
⇒
expression
⇒
matrix
]])
endCol
])
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See (), page 101.
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