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Considere a matriz A=(2113). Calcule Det(A).
7
4
6
5
Seja A=(202156−134). Calcule Det(A).
20
30
10
56
Calcular o valor de x, sabendo que A=|3x−3−1103422x−1| = 0.
x=−41
x=−4112
x=−4113
x=−4213