Hello
I have this matrix which I am trying to invert. I get a message about
reciprocal condition number, what that does mean?
> XT_X
[,1] [,2] [,3] [,4] [,5]
[1,] 3 0 0 2 1
[2,] 0 2 0 1 1
[3,] 0 0 2 1 1
[4,] 2 1 1 4 0
[5,] 1 1 1 0 3
> iXT_X <- solve(XT_X)
Error in solve.default(XT_X) :
system is computationally singular: reciprocal condition number = 1.11022e-17
Thanks
Rosario
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