## LU decomposition of matrix

Actually I am new to this topic.
I read few tutorials about LU decomposition of matrix in the net.
A = LU ; A - actual matrix, L - Lower triangular matrix, U - Upper triangular matrix.Few people say that, principal diagonal elements of L should be unity.
Some others say that, principal diagonal elements of U should be unity.
Pls clarify.
or else suggest me some suitable method for LU decomposition of a matrix.
Thanks.
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 Hey Muthuraj B and welcome to the forums. Have you looked at Wikipedia? http://en.wikipedia.org/wiki/LU_decomposition
 Thanks, chiro. Wikipedia says, "The factorization is unique if we require that the diagonal of L (or U) consist of ones." Fine. Either 'L' or 'U' has to have unity diagonal elements. Algorithms for LU decomposition that I can see in the net follows 'L' to have unity diagonal elements. But my problem requires 'U' to have unity diagonal elements. Could pls suggest such algorithm.

## LU decomposition of matrix

Ya. Got it.
Attached that file.
Pls check and correct me if anything is wrong.
Thanks all.
Attached Files
 LU_Decomposition.pdf (88.3 KB, 7 views)

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