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定义运算,称为将点(x,y)映到点(x′,y′)的一次变换.若=把直线y=kx上...
定义运算
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,称
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为将点(x,y)映到点(x′,y′)的一次变换.若
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=
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把直线y=kx上的各点映到这点本身,而把直线y=mx上的各点映到这点关于原点对称的点.则k,m,p,q的值依次是( )
A.k=1,m=-2,p=3,q=3
B.k=1,m=3,p=3,q=-2
C.k=-2,m=3,p=3,q=1
D.k=-2,m=1,p=3,q=3
考点分析:
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=(1,2),
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,则|2
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|等于( )
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