Introduction Conditioning of matrix norms Ax b,a nonsingular linear system; Ax=B,a perturbed system. The normwise absolute error is Ix-x=IA-1(b-b)川 命电有这女 Matrix Theory Matrix Norms -4/35Introduction Conditioning of matrix norms { Ax = b, a nonsingular linear system; Ax˜ = b˜, a perturbed system. The normwise absolute error is ∥x − x˜∥ = ∥A −1 (b − b˜)∥ Matrix Theory Matrix Norms - 4/35