HP-15C
STO g A-E, (i)
Same as above but the stack's Y register contains the row number and
X the column number, starting from 1.
The value must be present in Z.
Both X & Y will be popped from the stack so that the value ends up in
X.
STO g A-E, (i)
RCL g A-E, (i)
Same as above but the stack's Y register contains the row number and
X the column number, starting from 1.
RCL will pop X & Y from the stack and then push the matrix element
into X
STO MATRIX
A-E
X is a number: Store the value of X in all matrix elements.
X is a matrix: Copy matrix in X to the specified matrix. The destination
matrix will be redimensioned
RCL MATRIX
A-E
Put the matrix descriptor of the specified matrix in X
x
↔
A-E, (i)
Exchange X with the matrix element of A-E specified by R1/R0.
R1 & R0 are not affected
DSE A-E, (i)
ISG A-E, (i)
Decrements/increments the matrix element of A-E or (i) specified by
R1/R0. R1 & R0 are not affected. See DSE & ISG in section
Programming
RESULT A-E
Specifies the
result matrix
(default is A). This is the matrix that will hold
the result of a matrix operation. Not all operations require a result
matrix. The result matrix will automatically be dimensioned so that it
can properly hold the result. For some matrix operations the result
matrix can be identical to one of the input matrices
STO RESULT
When a matrix descriptor is already present in X then this matrix will be
used as the result matrix
RCL RESULT
Recalls the descriptor of the result matrix into X
Unary matrix
operations
Result in X
Effect on matrix
specified in X
Effect on RESULT
matrix
CHS
None
Changes sign of all
matrix elements
None as long as
X<>RESULT
1/x
Descriptor of RESULT.
X must be square
None as long as
X<>RESULT
Inverse of matrix X.
If it is singular, then
1/x will calculate the
inverse of a matrix
that is close to X.
MATRIX 4
None
Replaced by
transpose X
T
None as long as
X<>RESULT
MATRIX 7
Row norm: Largest sum
of absolute values of all
rows
None
None
MATRIX 8
Frobenius or Euclidian
norm of X: Square root
of the sum of all matrix
elements
None
None
MATRIX 9
Determinat of matrix.
X must be square
None as long as
X<>RESULT
LU decomposition of
matrix X
Scalar matrix operations
8
