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For ÷, the matrix specified in the X-register is replaced by its LU
decomposition. The ÷ function calculates X
method than does ∕ and *, giving the result faster and with improved
accuracy.
Example: Using matrices A and B from the previous example, calculate
T
C = A
B.
Keystrokes
l>
A
l>
B
´<
C
´> 5
The result, matrix C, is
Section 12: Calculating with Matrices
1
2
3
A
4
5
9
Display
A
2
b
2
b
2
C
3
C
1
and B
7
3
Recalls descriptor for matrix A.
3
Recalls descriptor for matrix B
into X-register, moving matrix
A descriptor into Y-register.
3
Designates matrix C as result
matrix.
3
Calculates A
result in matrix C, which is
redimensioned to 3×3.
29
39
73
.
37
51
95
66
90
168
–1
Y using a more direct
3
5
9
17
T
B and stores
155
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