[R] quadrati form

[Lorenzo Bencivelli]

Need to compute the numerical value of the solution of the quadratic form:
X'AX=I
where all the matrices are (n*n) [n may be very large]; X is the matrix 
containing n*n unknowns (those I need) and A contains the coefficients 
of the problem. "I" is the identity matrix of order n.
thanks in advance, Lorenzo

-- 


****************************************************************
credo nella ragione umana, 
e nella liberta' e nella giustizia che dalla ragione scaturiscono. (sciascia)