Sharp PC-1500 Applications Manual page 36
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SHARP
PROGRAM
T
I T
L
E
INVERSE MATRIX
PROGRAM NO.
PS-
A-
11
-·
[ Outline
I
CE-I SO
required
This program determines the
inverse
matrix of a
given
n order matrix
according to
the sweeping-out
method.
Processing is divided into
the
following:
I.
Data input
2. Data verification and
correction
3. Execution
[
Operating Guide
]
Input
:
Processing
selection
loEF
I
Q]
Data input
(Input
of n order matrix elements)
ioEF)
CD
.
Data verification and correction
(Verification and
c.orrection of n
order
matrix
elements)
E
xecution (Inverse matrix determination)
Output: Output of the entered matrix
elements.
The
output appears
after
a
beep
tone.
The
order
is
possible
up to
I
I.
[ Example]
t
I
-
2
-I
3
I
-
I
[ Contents
]
(Formulas)
=
4
2
-
0.5
Assume that a
matrix
is
A=
ia
ij
I (
;
.
i
=
I
-
"
)
a
;j
=
ai
;+
l
(
i
=
l
-
n
)
P
=
(lmm
-
1
(
m
=
l
-
n
)
O
m
j
=
«m;/P
{
j
=
1
-
n
)
ft
i
;
=
a
,
:
i
-
a
!
JJI
a
"'
i
{
i
=
1
-
ri
,
i ·
"'
)
Oi
i
=
(l
ii
.._
1
(
i
=
l
-
11
)
A fter computation,
(aij) turns
out
to
be
the inverse matrix of
the
original
matrix.
With P=O during calculation,
however,
no
computation
is possible,
resulting
in an
error.
Do not sale this PDF
!!!
-
30
-
-2]
-
I
05
[
Printout
]
A(J,
J
)=l
A(l, 2)=-2
A(J, 3)=
0
A(2,
l
)=
-
1
A
(2,2)
=
3
A(2,3)=
2
A
( 3,
I)=
I
A(3,2)
=-1
A(3,
3)
=
'1
C(l,
1)
=
7
C(
J,
2)
=
'1
C(l
,
3)=
-
2
(
(2,
J)
=
3
C<2,
2)
=
2
C<2,3).=-
I
C<3, 1
)
=
-
1
C<3, 2)=
-
0.
5
C<3,3)=
0.S
1
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