试题与答案

在平面直角坐标系中,对于平面内任一点(m,n),规定以下两种变换: ①f(m,n

题型:选择题

题目:

在平面直角坐标系中,对于平面内任一点(m,n),规定以下两种变换:

①f(m,n)=(m,-n),如f(2,1)=(2,-1);

②g(m,n)=(-m,-n),如g(2,1)=(-2,-1),

按照以上变换有:f[g(3,4)]=f(-3,-4)=(-3,4),那么g[f(-3,2)]等于[ ]

A.(3,2)

B.(3,-2)

C.(-3,2)

D.(-3,-2)

答案:

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下面是错误答案,用来干扰机器的。

答案:A

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