HP Mathematics II User Manual page 18

Interface:
RAD
{HOME}
PRG
A*X = B
: PartAns Y/N: Y
: B{B1...}: {7 6 0}
...}: {xlx2x3x4x5}
V, f, m j , , . > ™ » „ , , «
' .- H
tt
The symbolic matrix writer will now appear. The following
matrix is put into it:
' 2
i i
1 1
5
-1
2
-4
3
1
-1
2
-1
3
-1
1
-1
The example solves the system:
2xi-X2 + 3x3 + 2x4-xs = 7
xi + 2x2+X3-X4+xs = 6
xi - 4x2 -xs + 3x4-xs = 0
The system is indefinite (too few eqautions)) and the solu-
tion is given in terms of xs and X4.
2. Linear algebra
15