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如果(x,y)在映射f作用下的象是(2x-y,x-2y),则(1,2)的象是( ...
如果(x,y)在映射f作用下的象是(2x-y,x-2y),则(1,2)的象是( )
A.(0,-3)
B.(4,1)
C.(0,-1)
D.(0,1)
考点分析:
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