LUDecomposition
- To: mathgroup at smc.vnet.net
- Subject: [mg117676] LUDecomposition
- From: Kevin <kjslag at gmail.com>
- Date: Tue, 29 Mar 2011 06:58:37 -0500 (EST)
LUDecomposition[{{1, 2}, {3, 4}}]
and
LUDecomposition[{{3, 4}, {1, 2}}]
both give the same output:
{{{1, 2}, {3, -2}}, {1, 2}, 1}
Only the output for the first matrix is correct.
Alpha gives the same incorrect results for the 2nd matrix
correct 1st matrix: http://www.wolframalpha.com/input/?i=LUDecomposition+{{1%2C2}%2C{3%2C4}}
incorrect 2nd matrix: http://www.wolframalpha.com/input/?i=LUDecomposition+{{3%2C4}%2C{1%2C2}}