- #1
rey242
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Homework Statement
Give a least squares solution to Ax=C and give the residual error
A=
-1, 1, 2;
1, -1, 0;
1, -1, 2;
C=
-1;
-1;
2;
Homework Equations
Residual Error= |Ax-C|
The Attempt at a Solution
I have done an RREF on the Transpose of A times A augmented with the Transpose of A time C and got this:
1, -1, 0, 2/3;
0, 0, 1, 1/4;
0, 0, 0, 0;
I'm not sure what I should do about the bottom row... I know that SHOULD be always an LSQ but it doesn't seem to come out. I know that bottom row indicates an infinite amount of solutions but not sure how to proceed next. Please help