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[" 58.Let "A=([0,0,-1],[0,-1,0],[-1,0,0]...

[" 58.Let "A=([0,0,-1],[0,-1,0],[-1,0,0])," the only correct statement "],[" about the matrix "A" is "],[[" (a) "A^(2)=l," is "],[" (b) "A=(-1)I," where "/" is a unit matrix ",67.],[" (d) A is a zero matrix "]]

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