how to calculate matrix inverse
[210 byte] By [sockshoesa] at [2007-11-26 22:50:21] 
how to calculate matrix inverse 100 x 100...1.must generate random matrix number2.the answer of that matrix must write in file.txt or file.dat and can read that matrix again using that file
«« Help with calling a class file
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»» JTable..extending and adding selection settings gives strange results
> how to calculate matrix inverse 100 x 100...
Short answer: you don't.
Longer answer: instead of calculating an explicit (numerically very
unstable) inverse of a matrix A you calculate PA= LU where P is a
row permutation matrix, L and U are lower and upper triangular
matrixes respectively and L has just 1s on its main diagonal.
Google for LUP decomposition.
kind regards,
Jos
JosAHa at 2007-7-10 12:11:32 >
http://math.nist.gov/javanumerics/jama/
Lokoa at 2007-7-10 12:11:32 >
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