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1个回答
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显然PQ=E,即P,Q互为逆矩阵,因此PQ=QP=E
则
A^5=(PBQ)^5
=PBQPBQPBQPBQPBQ
=PB(QP)B(QP)B(QP)B(QP)BQ
=PBEBEBEBEBQ
=PB^5Q
=Pdiag(-32,1,-1)Q
则
A^5=(PBQ)^5
=PBQPBQPBQPBQPBQ
=PB(QP)B(QP)B(QP)B(QP)BQ
=PBEBEBEBEBQ
=PB^5Q
=Pdiag(-32,1,-1)Q
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