Question: Exercise 2.4 (a) Show that AVA = AV =VA. (b) Show that AV1A = AV1 =V1A. (c) Show that A is the same for any

Exercise 2.4

(a) Show that AVA = AV =VA.

(b) Show that AV−1A = AV−1 =V−1A.

(c) Show that A is the same for any choice of XV−1X

−

.

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