设函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632018_ST/0.png)
,其中向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632018_ST/1.png)
=(m,cos2x),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632018_ST/2.png)
=(1+sin2x,1),x∈R,且y=f(x)的图象经过点
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632018_ST/3.png)
.
(Ⅰ)求实数m的值;
(Ⅱ)求函数f(x)的最小值及此时x值的集合.
考点分析:
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cos
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已知向量
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632014_ST/0.png)
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=(
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,-1),则|2
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632014_ST/3.png)
-
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|的最大值是
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已知|
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632013_ST/0.png)
|=1,|
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632013_ST/1.png)
|=2,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632013_ST/2.png)
、
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的夹角为60°,若(3
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632013_ST/4.png)
+5
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632013_ST/5.png)
)⊥(m
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101224435508263201/SYS201311012244355082632013_ST/6.png)
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),则m的值为
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