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1、VP-於/于A； 2、爲A-VP 3、見VP 4、見VP-於/于A 5、爲A-所VP 6、被

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定义6设A为n阶方阵,如果ATA=1,就称A为正交 定理4A为n阶正交矩阵的充分必要条件是A的 证设

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定义4:i)设f(X)=anXn+…+a1X+a,c∈F, 则f(c)=ancn+…+a1c+a,称为f(X)在c点的值

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一、设矩阵A满足A2+A-4E=0,其中E为单位矩阵,则(A-E)-1=