若可逆方阵A有一个特征值为-1,方阵(A3)-1必有一个特征值为(  )

若可逆方阵A有一个特征值为-1,方阵(A3)-1必有一个特征值为(  )A.1 B.-1 C. D.

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设α1,α2为Ax=b的解,β为对应导出组Ax=0的解,则Ax=b必有一个解为(  )

设α1,α2为Ax=b的解,β为对应导出组Ax=0的解,则Ax=b必有一个解为(  )A.β+α1-α2 B.α1+α2 C.β+α1+α2 D.

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Whatis NOT the cause for the imminent water war?

Whatis NOT the cause for the imminent water war?A.Lack of water resource B.Lack

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Inthe author's opinion, in order to make fake foning look re

Inthe author's opinion, in order to make fake foning look real one has to A.talk

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