Let Q be an n n orthogonal matrix. Show that (a) Q 2 = 1 (b) cond2(Q) = 1 (c) for any b
Chapter 7, Problem 41(choose chapter or problem)
Let Q be an n n orthogonal matrix. Show that (a) Q 2 = 1 (b) cond2(Q) = 1 (c) for any b Rn, the relative error in the solution of Qx = b is equal to the relative residual, that is, e 2 x 2 = r 2 b 2
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