LU decomposition: Difference between revisions
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(→{{header|Go}}: added version with flat representation) |
(LU composition of Matlab / Octave) |
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[[File:LUex1.png]] |
[[File:LUex1.png]] |
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[[File:LUex2.png]] |
[[File:LUex2.png]] |
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=={{header|Matlab / Octave}}== |
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LU decomposition is part of language |
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<lang Matlab> |
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A = [ |
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1 3 5 |
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2 4 7 |
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1 1 0]; |
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[L,U,P] = lu(A)</lang> |
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gives the output: |
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<lang Matlab> L = |
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1.00000 0.00000 0.00000 |
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0.50000 1.00000 0.00000 |
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0.50000 -1.00000 1.00000 |
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U = |
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2.00000 4.00000 7.00000 |
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0.00000 1.00000 1.50000 |
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0.00000 0.00000 -2.00000 |
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P = |
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0 1 0 |
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1 0 0 |
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0 0 1 |
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</lang> |
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2nd example: |
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<lang Matlab> A = [ |
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11 9 24 2 |
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1 5 2 6 |
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3 17 18 1 |
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2 5 7 1 ]; |
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[L,U,P] = lu(A)</lang> |
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gives the output: |
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<lang Matlab> L = |
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1.00000 0.00000 0.00000 0.00000 |
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0.27273 1.00000 0.00000 0.00000 |
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0.09091 0.28750 1.00000 0.00000 |
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0.18182 0.23125 0.00360 1.00000 |
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U = |
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11.00000 9.00000 24.00000 2.00000 |
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0.00000 14.54545 11.45455 0.45455 |
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0.00000 0.00000 -3.47500 5.68750 |
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0.00000 0.00000 0.00000 0.51079 |
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P = |
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1 0 0 0 |
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0 0 1 0 |
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0 1 0 0 |
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0 0 0 1 |
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</lang> |
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=={{header|Python}}== |
=={{header|Python}}== |
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