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Q2 15 Points Let n E N and A € Mnxn(R). Define trace(A) = 21=1 Qişi (i. e. the sum of the diagonal entries) and tr : Mnxn(R)

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2-3 Finding ken (tre) ta (n) = 0 Q2. Af Maan (R) fro: Mnen (IR) IR defined by to (A) a ľau 2 Žai, izl 2 ( izl 2) at 0.2,2 f tOi Or..0 0 0 0 © 0 O O O 0 ☺ This i the basis for kin (tro) since kern (th) is generated by this set and this į linealle inde. Az. B t a. where 13 defined in Q2.4 92.5 par to a ER ferim aut (9) equal (anitaart...tann).

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