Question: Let A be a nonsingular n n matrix and let Q be an n n orthogonal matrix. Show that (a) cond2(QA) = cond2(Ag)

Let A be a nonsingular n × n matrix and let Q be an n × n orthogonal matrix. Show that
(a) cond2(QA) = cond2(Ag) = cond2(A)
(b) If B = QTAQ, then cond2(S) = cond2(A).

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a It follows from Exercise 34 that QA 2 A 2 and A 1 QT 2 ... View full answer

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