设A=
(12
43),
B=
(x1
2y),
当x与y满足____时,有A=B
设A=
(12
43),
B=
(x1
2y),
当x与y满足____时,有A=B
A、A
B、|A|·A
C、A/|A|
D、A/|A|n-1
【正确答案】:B
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