Texas Instruments TI-Nspire - Using Lists & Spreadsheet; Getting started with tables

TI-Nspire™ Reference Guide 87
rowDim()
Catalog
>
rowDim(Matrix) ⇒ expression
Returns the number of rows in Matrix.
Note: See also colDim(), page 17.
rowNorm()
Catalog
>
rowNorm(Matrix) ⇒ expression
Returns the maximum of the sums of the absolute values of the
elements in the rows in Matrix.
Note: All matrix elements must simplify to numbers. See also
colNorm(), page 17.
rowSwap()
Catalog
>
rowSwap(Matrix1, rIndex1, rIndex2) ⇒ matrix
Returns Matrix1 with rows rIndex1 and rIndex2 exchanged.
rref()
Catalog
>
rref(Matrix1[, Tol ]) ⇒ matrix
Returns the reduced row echelon form of Matrix1.
Optionally, any matrix element is treated as zero if its absolute value
is less than Tol . 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, Tol is ignored.
• If you use
/
·
or set the Auto or Approximate
mode to Approximate, computations are done using floating-
point arithmetic.
•If Tol is omitted or not used, the default tolerance is calculated
as:
5EL14 ·max(dim(Matrix1)) ·rowNorm(Matrix1)
Note: See also ref(), page 82.