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4. (10 pts) Let De Mn (R) be invertible and define the map T: Mn(R) → Mn (R) by T(A) = D2 AD-1. 3 (a) (3 pts) Show that T is

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map Criven, DE MALLIR) be invertible and define the T: MALIR) mm CIR) by T(A) 202AD-1 let, A, B E MM CIR) and XER . T(A+B) -

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