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标题: og-148 [打印本页]

作者: missouyang 时间: 2005-10-30 06:48 标题: og-148

in the rectangular coordinate system above,the shaded region is bounded by straight lines.Which of the following is not an equation of one of the boundary lines?

A x=0

B y=0

C x=1

D x-y=0

E x+2y=2

答案为D.(有个图形,因为没有工具化不上.)

题目的意思是什末呢?理解不了?谢谢

作者: llyliuliyum 时间: 2005-10-31 07:09

up!!!!

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