Section 12: Calculating with Matrices 169
4. Recall the descriptor of the matrix representing
A
into the display.
5. If the elements of
A
were entered in the form of
A
C
, press
´
p
to transform
A
C
into
A
P
.
6. Press
´>
2 to transform
A
P
into
Ã
.
7. Designate the result matrix; it must not be the same as the matrix
representing
A
.
8. Press
÷
; this calculates
X
P
. The values of these matrix elements
are placed in the result matrix, and the descriptor of the result matrix
is placed in the X-register.
9. If you want the solution in the form
X
C
, press
|c
.
Note that you don't transform
B
P
into
.
You can derive the complex elements of the solution
X
by recalling the
elements of
X
P
or
X
C
and combining them according to the conventions
described earlier.
Example:
Engineering student A. C. Dimmer wants to analyze the
electrical circuit shown below. The impedances of the components are
indicated in complex form. Determine the complex representation of the
currents
I
1
and
I
2
.
This system can be represented by the complex matrix equation
0
5
30)
(200
200
200
200
10
2
I
I
i
i
i
i
1
or
AX = B
.
Summary of Contents for HP-15C
Page 1: ...HP 15C Owner s Handbook HP Part Number 00015 90001 Edition 2 4 Sep 2011 ...
Page 17: ...Part l HP 15C Fundamentals ...
Page 64: ......
Page 65: ...Part ll HP 15C Programming ...
Page 118: ...118 ...
