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Diberikan matriks $A=\\begin{bmatrix} \\var{a+1} & 0 & 0 \\\\ 0 & \\var{a} & 0 \\\\ 0 & 0 & \\var{a-1} \\end{bmatrix}$ dan $B=\\begin{bmatrix} \\var{a+1} & \\var{a} & \\var{a-1} \\\\ \\var{a} & \\var{a} & \\var{a-1} \\\\ \\var{a-1} & \\var{a-1} & \\var{a-1} \\end{bmatrix}$.

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Pilih semua pernyataan yang tepat mengenai matriks $A$ dan $B$.

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