Question

sendo A=[3] e B={7], determine a matriz X tal que 2X+A=3B
[ 2] [4]
[ -1] [-3]

Answer 1

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Ola Leias

A = (3, 2, -1)
B = (7, 4, -3)

3B = (21, 12, -9)

3B - A = (21-3, 12-2, -9+1) = (18,10,-8)

2X =  (18,10,-8)

X = (9, 5, -4)

pronto