Hi,
I was using gmres to solve linear sysmtem Ax=b where A is a n*n large square matrix and b is n*1.
However, if A is m*n matrix where m>n that is least square case than can we use some iterative method like gmres (Generalized minimum residual method) or pcg (Preconditioned conjugate gradients method) type approach to solve it faster like for square case.
The basic goal is to solve large non-square matrix A faster for x.
Please help me with the matlab functions that handle this case?
Thanks
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