已知函数f(x)=cos
2x+
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100029636510785/SYS201311031000296365107017_ST/0.png)
sinxcosx.
(Ⅰ)若x∈[0,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100029636510785/SYS201311031000296365107017_ST/1.png)
],求f(x)的最大值及取得最大值时相应的x的值;
(Ⅱ)已知cos(β-α)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100029636510785/SYS201311031000296365107017_ST/2.png)
,cos(β+α)=-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100029636510785/SYS201311031000296365107017_ST/3.png)
,0<α<β≤
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100029636510785/SYS201311031000296365107017_ST/4.png)
,求f(
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103100029636510785/SYS201311031000296365107017_ST/5.png)
)的值.
考点分析:
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,
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