Help with LU factorisation

[macca878787]

Hello,

i was wondering if anyone could help me with the following question. I am supposed to find an LU factorisation of the 3x3 matrix

A =

1 4 7
2 5 8
3 6 10

I worked out both the upper and lower triangular matrix but my answers don't correspond with the answers i was given, just wodering if anybody could check it out and perhaps tell me what answer they got,

Cheers, Macca.

 

[Deleted member 4993]

Hello,

i was wondering if anyone could help me with the following question. I am supposed to find an LU factorisation of the 3x3 matrix

A =

1 4 7
2 5 8
3 6 10

I worked out both the upper and lower triangular matrix but my answers don't correspond with the answers i was given, just wodering if anybody could check it out and perhaps tell me what answer they got,

Cheers, Macca.

for a quick review go to:

http://en.wikipedia.org/wiki/LU_decomposition

Please show us your work, indicating exactly where you are stuck - so that we know where to begin to help you.