Answers

A=A^T,AJ=(AJ)^Tより
(0 0 0)
(0 d 0)
(0 0 c)
よって、Wの基底は
(0 0 0) (0 0 0)
(0 1 0) (0 0 0)
(0 0 0), (0 0 1)

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