[R] Inverse Matrices

[laura@bayesian-bay.freeserve.co.uk]

I have a problem with finding the inverse of a matrix. I have a square
9x9 matrix, A, and when I do solve(A) to find the inverse I get the
following error message:

Error in solve.default(A) : singular matrix `a' in solve

Has anybody got any ideas as to why this is happening?

Thanks 

Laura Gross



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