Remarks: This program is for a system of two or three equations
(that is, a matrix of n < 3).
For
2x2
solutions
use
zero
for
coefficients
C, F, G,
H,
and
L.
Use
1
for coefficient I. For non-square matrices, use zero for the 'missing"'
coefficients.
Not all systems of equations have solutions. If not, they cause the
error
DIVIDE
BY 0
at
line
S21.
Example
1. For the system below, compute the determinant
and
the
system solution. Then substitute the values back into the first equa
tion to verify that the left side of the equation is actually equal to the
right side (1).
23X
+
15Y
+
17Z
= 1
8X
+
11Y
-
6Z
= 1
4X
+
15Y
+
12Z
= 1
Keys:
IXEQIA
23fR7s|
8[r7s]
4[r7s]
15
fR/Si
1
[rTsI
ICEQl
D
Display:
Description:
fl?va/ae
Starts
input
routine.
B?value
Sets
first
coefficient,
A,
equal to 23.
C?value
Sets B equal to 8.
D?value
Sets C equal to 4.
E?value
Sets D equal to 15.
:
Continues entry for all
values (E through
L).
fl?23.0000
4,598.0000
Returns
to
first
coef
ficient
entered.
Calculates
the
determinant.
180
12:
Mathematics
Programs
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