设A=
(12
43)
B=
(x1
2y)
,当x与y满足_____时,有AB=BA()
设A=
(12
43)
B=
(x1
2y)
,当x与y满足_____时,有AB=BA()
A、2x=7
B、y=x+1
C、2y=x
D、y=x-1
【正确答案】:B
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