166 Section 12: Calculating with Matrices
Keystrokes Display
´ < B
A 4 4
Designates B as the result
matrix.
⁄
b 4 4
Calculates (Z)
−1
= (Z
−1
) and
places the result in matrix B.
´ > 3
b 4 2
Transforms (Z
−1
) into (Z
−1
)
P
.
The representation of Z
−1
in partitioned form is contained in matrix B.
B =
−0.0254 0.2420
−0.0122 −0.1017
−0.2829 −0.0022
0.1691 −0.1315
Multiplying Complex Matrices
The product of two complex matrices can be calculated by using the fact
that (YX)
P
= YX
P
.
To calculate YX, where Y and X are complex matrices:
1. Store the elements of Y and X in memory, in the form either of Z
P
or
Z
C
.
2. Recall the descriptor of the matrix representing Y into the display.
3. If the elements of Y were entered in the form of Y
C
, press ´ p
to transform Y
C
into Y
P
.
4. Press ´ > 2 to transform Y
P
into Y.
5. Recall the descriptor of the matrix representing X into the display.
6. If the elements of X were entered in the form X
C
, press ´ p to
transform X
C
into X
P
.
7. Designate the result matrix; it must not be the same matrix as
either of the other two.
Real Part
Imaginary Part
~
~
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