When solving for x as given in question (photo attached),
I can't seem to get the right x. I solve for x using row reduction with augumented matrix
1 4 4 4
0 1 4 1
2 9 8 3
and I get x = (4,3,1) which is wrong, with the error message that I'm solving wrongly.
Using graphic calculator's simultaneous equation solver, I get an answer of (20, 5, 1), different from my augumented matrix. I don't understand why, and I'm confused. Where did I go wrong? Any tips is greatly appreciated!
I can't seem to get the right x. I solve for x using row reduction with augumented matrix
1 4 4 4
0 1 4 1
2 9 8 3
and I get x = (4,3,1) which is wrong, with the error message that I'm solving wrongly.
Using graphic calculator's simultaneous equation solver, I get an answer of (20, 5, 1), different from my augumented matrix. I don't understand why, and I'm confused. Where did I go wrong? Any tips is greatly appreciated!
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