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RIJEÅ ENI ZADACI IZ MATEMATIKE

RIJEÅ ENI ZADACI IZ MATEMATIKE

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29. Izračunajte detC ako je C ∈ M 4 i znamo da je det ( 12 C) = 1 8 .Rješenje:det(αA) = α n detA, A ∈ M n( ) 1det2 C = 1 8 , C ∈ M 4( ) 4 1detC = 1 2 8116 detC = 1 8 / · 16detC = 168detC = 231

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