HP -32S Owner's Manual page 191

Variables Used:
A through I
J through L
W
X through Z
Coefficients of matrix.
Column vector values.
Scratch variable used to store the determinant.
Output vector values; also used for scratch.
Loop-control value (index variable); also used for
scratch.
Remarks: For 2x2 solutions use zero for coefficients C, F, H, G and
for L. Use 1 for coefficient I.
Not all systems of equations have solutions.
Note that routines A, L, and D are common to this program and to
the 'Solutions of Simultaneous Equations—Determinant Method*
program.
Example. For the system below, compute the inverse and the system
solution. Review the inverted matrix. Invert the matrix again and re
view the result to make sure that the original matrix is returned.
Keys:
fXEQlA
23QVS)
8(rTs]
4QJ/SJ
15rR7s"
23X + 15Y + VIZ = = 31
8X + 11Y - 6Z = 17
4X + 15Y +
12Z = 14
Display:
Description:
fl?va/ue
Starts input routine.
B?value
Sets first coefficient, A,
equal to 23.
C?value
Sets B equal to 8.
Devalue
Sets C equal to 4.
E?value
Sets D equal to 15.
Continues entry for D
through L.
12: Mathematics Programs 189