Talk:LU decomposition: Difference between revisions
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(matlab code gives wrong results) |
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I think the permutation matrix you proposed makes more sense as well. |
I think the permutation matrix you proposed makes more sense as well. |
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== Matlab code is wrong == |
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Please lock at the following example |
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A=[1 2 -1 0;2 4 -2 -1; -3 -5 6 1; -1 2 8 -2] |
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the code returns nonsense for U, namely |
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U = |
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0 0 0 -1.0000 |
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0.5000 1.0000 -0.5000 0 |
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-0.1429 0 1.0000 0.2857 |
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0.1563 0 0 1.0000 |
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I presume the reason is the permutation matrix. I will try to correct it. |
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