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设实数x,y满足约束条件,若目标函数z=+(a>0,b>0)的最大值为9,则d=...
设实数x,y满足约束条件
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100447155297949/SYS201311031004471552979013_ST/0.png)
,若目标函数z=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100447155297949/SYS201311031004471552979013_ST/1.png)
+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100447155297949/SYS201311031004471552979013_ST/2.png)
(a>0,b>0)的最大值为9,则d=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100447155297949/SYS201311031004471552979013_ST/3.png)
的最小值为
.
考点分析:
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