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定义,设实数x,y满足约束条件,z=max{4x+y,3x-y},则z的取值范围...
定义
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,设实数x,y满足约束条件
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,z=max{4x+y,3x-y},则z的取值范围是
.
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103095951756240527/SYS201311030959517562405008_ST/0.png)
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D.
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