Etapa judetean˘a — solutii si barem orientativ, clasa a XI-a Problema 1. (a) Dati un exemplu de dou˘a matrice A si B din M 2
P4. Fie A, B ∈ M 3(C) cu proprietatea ca matricea M = (AB − BA) 3 comuta cu A. Aratati ca M comuta cu B.
1 1. 02?=846 /B6=48? 8@9 %# -:7 =3CA:57<7 A φ # 1 2 3 4 $,B φ # 5 6 7 8 $ . 0"3 B7 53<5D<7G7 @A?6DB7<7 AB B:
MAT 226 - EQUAC¸ ˜OES DIFERENCIAIS I Professor Oswaldo Rio Branco de Oliveira Segundo semestre de 2017 LISTA 5 DE EXERCÍCIOS
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