RIJEÃ…Â ENI ZADACI IZ MATEMATIKE
RIJEÃ…Â ENI ZADACI IZ MATEMATIKE
RIJEÃ…Â ENI ZADACI IZ MATEMATIKE
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⎡ ⎤1 0 310. Odredite inverznu matricu matrice A = ⎣0 −1 2⎦2 0 7Rješenje:⎡⎤ ⎡⎤1 0 3 | 1 0 0 1 0 3 | 1 0 0⎣0 −1 2 | 0 1 0⎦ ∼ ⎣0 −1 2 | 0 1 0⎦ ∼2 0 7 | 0 0 1 0 0 1 | −2 0 1⎡⎤ ⎡⎤1 0 3 | 1 0 0 1 0 0 | 7 0 −3∼ ⎣0 1 −2 | 0 −1 0⎦ ∼ ⎣0 1 0 | −4 −1 2 ⎦0 0 1 | −2 0 1 0 0 1 | −2 0 1⎡⎤7 0 −3A −1 = ⎣−4 −1 2 ⎦−2 0 111
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