Returns the inverse of the Hilbert matrix
A = makematrix_invhilbert ( n )
a 1-by-1 matrix of doubles, integer value, the size of the matrix to return
a n-by-n matrix of doubles, the inverse of the Hilbert matrix
Returns the inverse of the Hilbert matrix of size n.
This is translated from Scilab fortran source code hilber.f
http://en.wikipedia.org/wiki/Hilbert_matrix