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The > 7 (row norm) and > 8 (Frobenius norm) functions also
operate as conditional branching instructions in a program. If the X-register
contains a matrix descriptor, these functions calculate the norm in the usual
manner, and program execution continues with the next program line. If the
X-register contains a number, program execution skips the next line. In both
cases, the original contents of the X-register are stored in the LAST X
register. This is useful for testing whether a matrix descriptor is in the X-
register during a program.
Summary of Matrix Functions
Keystroke(s)
|c
"
´m {A
through E, V}
´> 0
´> 1
´> 2
´> 3
´> 4
´> 5
Section 12: Calculating with Matrices
Results
P
Transforms Z
into Z
Changes sign of all elements in matrix specified in
X-register.
Dimensions specified matrix.
Dimensions all matrices to 0×0.
Sets row and column numbers in R
P
Transform Z
into .
Transforms
into Z
Calculate transpose of matrix specified in X-register.
Multiplies transpose of matrix specified in Y-
register with matrix specified in X-register. Stores in
C
.
0
P
.
177
and R
to 1.
1
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