Rowdim; Rownorm; Rowswap; Rref - Texas Instruments TI-Nspire Reference Manual

rowDim()

⇒
Matrix expression
rowDim( )
Returns the number of rows in Matrix.
See also colDim(), page 17.
Note:

rowNorm()

⇒
Matrix expression
rowNorm( )
Returns the maximum of the sums of the absolute values of the
elements in the rows in Matrix.
All matrix elements must simplify to numbers. See also
Note:
colNorm(), page 17.

rowSwap()

Matrix1 rIndex1
rowSwap( ,
Returns Matrix1 with rows rIndex1 and rIndex2 exchanged.

rref()

⇒
Matrix1 Tol matrix
rref( [, ])
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
mode to Approximate, computations are done using floating-
point arithmetic.
If Tol is omitted or not used, the default tolerance is calculated
•
as:
L
14 ·max(dim(Matrix1)) ·rowNorm(Matrix1)
5E
See also ref(), page 82.
Note:
⇒
rIndex2 matrix
, )
or set the
Auto or Approximate
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