设函数f(x)=
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128012_ST/0.png)
,则
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128012_ST/1.png)
f(x)dx的值为
.
考点分析:
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已知函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128011_ST/0.png)
的零点按从小到大的顺序排列成一个数列,则该数列的前n项的和为S
n,则S
10=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128011_ST/1.png)
B.2
9-1
C.45
D.55
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在△ABC中,AC=6,BC=7,
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128010_ST/0.png)
,O是△ABC的内心,若
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,其中0≤x≤1,0≤y≤1,动点P的轨迹所覆盖的面积为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128010_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128010_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128010_ST/4.png)
D.
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已知双曲线M:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128009_ST/0.png)
和双曲线N:
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128009_ST/1.png)
,其中b>a>0,且双曲线M与N的交点在两坐标轴上的射影恰好是两双曲线的焦点,则双曲线M的离心率为( )
A.
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B.
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C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128009_ST/4.png)
D.
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已知函教f(x)=Asin(ωx+φ)(A>0,ω>0)的图象与直线y=b(0<b<A)的三个相邻交点的横坐标分别是2,4,8,则f(x)的单调递增区间是( )
A.[6kπ,6kπ+3],k∈Z
B.[6k-3,6k],k∈Z
C.[6k,6k+3],k∈Z
D.[6kπ-3,6kπ],k∈Z
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从一个棱长为1的正方体中切去一部分,得到一个几何体,其三视图如图,则该几何体的体积为( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128007_ST/images0.png)
A.
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B.
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C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148766912833/SYS201311031011487669128007_ST/2.png)
D.
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