Hi,

I solved the matrix using standard row operations. Then I used x=A^-1
*b in Excel and all I got was garbage. My first results showed
virtually no error. The commands I used in Excel were,

=MINVERSE(AA1:AH8) (Saved in AA11:AH18)
=MMULT(AA11:AH18,AI1:AI8) (Saved in AI21:AI28)

To review, the problem is to solve 8 equations for 8 unknowns. The
unknowns are x[1],x[2],x[3],..,x[8] and the augmented matrix is,

AA1 AB1 AC1 ... AH1 | AI1
AA2 AB2 AC2 ... AH2 | AI2
AA3 AB3 AC3 ... AH3 | AI3
..
..
AA8 AB8 AC8 ... AH8 | AI8

What did I do wrong?

Jon

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