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数学达人:新GRE《OG》数学题精选及解答.

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The figure above shows the graph of a function f, dined by f(x)=|2x|+4 for all numbers x. For which of the following functions g dined for all The figure above shows the graph of a function f, dined by f(x)=|2x|+4 for all numbers x. For which of the following functions g dined for all numbers x does the graph of g intersect the graph of f ?

  A g(x)=[1]x–2

  B g(x)=[1]x+3

  C g(x)=[1]2x – 2

  D g(x)=[1]2x+3

  E g(x)=[1]3x – 2

  这个题就是问两个函数图象相交的问题,根据观察,要与这个折线相交的直线的斜率满足的条件是要么是正斜率比2大,要么是负斜率比-2小,因此只能选E了。获得更多gre考试咨询点击进入>>>>澳际免费咨询顾问或联系QQ客服:800004500

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