HP 40gs - Manual (Page 218)

14-36 Computer Algebra System (CAS)
L1=2L1+L2
ENTER
Reduction Result
then press ENTER. The following is then written to the
Equation Writer:
(x = −2) AND (y = −1)
Example 2
Type:
(2·X+Y+Z=1)AND(X+Y+2·Z=1)AND(X+2·Y+Z=4)
Then, invoke LINSOLVE and type the unknowns:
X AND Y AND Z
and press the ENTER key.
The following result is produced if you are in Step-by-step
mode (CFG, etc.):
L2=2L2−L1
ENTER
L3=2L3−L1
and so on until, finally:
Reduction Result
1 1 3
0 2
– 2 –
2 0 4
0 2
– 2 –
2 1 1 1 –
1 1 2 1 –
1 2 1 4 –
2 1 1 1 –
0 1 3 1 –
1 2 1 4 –
8 0 0 4
0 8 0 20 –
0 0 8 – 4 –
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