D15
RCLx
C
D16 -
(AxExT)
+
(DxHxQ
+
(GxFxB)
-
(GxExQ.
D17
RCL
fl
D18
RCLx
F
D19
RCLx
H
D20 -
(AxExI)
+
(DxHxQ
+
(GxFxB)
-
(GxExQ
-
(AxFxH).
D21
RCL
D
D22
RCLx
B
D23
RCLx
I
D24 -
(AxExI)
+
(DxHxQ
+
(GxFxB)
-
(GxExQ
-
(AxFxH)
-
(DxBxI).
D25
RTN
Returns to the calling program or to
PRGM
TOP.
Bytes
and
Checksum: 037.5, 152E
Flags
Used:
None.
Memory Required: 262 bytes: 134 for program, 128 for variables.
Program
Instructions:
1.
Key
in the program routines; press[c] when done.
2. Press
fxEQl
Ato input coefficients (that is,A through
L)
of linear
equations.
3.
Key
in coefficient
(A
through
L)
at each prompt and pressIR/s
I.
4. Optional: to compute determinant of a 3 x 3 system,
IXEQI
D.
5. Compute solution to system of equations by pressing
IXEQI
S.
6. See
value
of X and press
IR/SI
to see the
value
of
Y.
7.
Press
IR/S I
to
see
the
value
of
Z.
8. For a
new
case, go back to step 2.
Variables
Used:
A through 7 Coefficients of equations.
/ through L Right-hand sides of equations.
X through Z Unknowns.
i Loop-control value (index variable).
12:
Mathematics
Programs
179
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