问题啊，求各位大神解释

ssysyjzmf · 发表于 2012-6-3 22:20:36

Which of the following inequalities has a solution set that, when graphed on the number line, is a single line segment of finite length?
我选的是 x的三次方<=27 答案是2<=3x+4<=6,求各位大神解释啊~~

athenawujj · 发表于 2013-1-8 20:23:01

顶！！我也不懂

问题啊，求各位大神解释

所属分类: GMAT考试

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