HP -32S Owner's Manual page 182

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