A.λ=-2 且丨B丨=0 B.λ=-2且丨B丨≠0 C.λ=1 且丨B丨=0 D.λ=1且丨B丨≠0A.λ=-2 且丨B丨=0 B.λ=-2且丨B丨≠0

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问题

选项 A.λ=-2 且丨B丨=0
B.λ=-2且丨B丨≠0
C.λ=1 且丨B丨=0
D.λ=1且丨B丨≠0

答案C

解析
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