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1.48(b), §3 Elimination

Gaussian elimination:

A. Forward Elimination:

Use (1) to eliminate x from (2):

The second equation is trivial.

B. Back Substitution:

Solve (1) to find x=5-2y.

Next: 1.48(b), §4 Matrix Up: 1.48(b) Previous: 1.48(b), §2 Graphically
09/14/01 0:26:36