Sharp PC-1500 - Page 36

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SHARP
PROGRAM
T I T L E
INVERSE MATRIX
PROGRAM NO.
PS - A- 11
-·
[ Outline I
C E- 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. Ex ec ution
[ Operating Guide ]
Inp ut : Processing selection
l oEF I Q] Data input (I nput of n order matrix eleme nts)
i oEF ) CD . Data verification and correction (Verification and
c.orrection
of n order matrix elements)
Execution (Inverse matrix determination)
Output: Output of the enter ed matrix elements. The output appears after a
b
eep 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 )
Af ter c omputation, (aij) turns out to be
the inverse matrix of th e ori ginal matrix.
With
P=O during calculation, however, no
computation is possible, resulting in an
error.
Do not sale this PDF !!!
- 30 -
- 2]
- I
05
[ Pr in tout ]
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