HP 40gs User Manual

Page 218

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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 0 4
0 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

0 8 0

–

0 0 8

–

hp40g+.book Page 36 Friday, December 9, 2005 1:03 AM

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