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标题: GWD8-12 [打印本页]

作者: freesimens 时间: 2005-7-15 06:56 标题: GWD8-12

In the xy-plane, region R consists of all the points (x,y) such that 2x+3y = 6. Is the point (r,s) in region R?

(1) 3r+2S=6

(2) r=3 and s=2

I think the answer should be B, but it turns out to be E. Could anyone help me?

作者: himba 时间: 2005-7-15 12:51

本题关键问题在于consists of的理解，有语法问题，选e是正确答案

作者: freesimens 时间: 2005-7-17 08:32

thanks a lot !!!!

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