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若扇形圆心角的弧度数为2,且扇形弧所对的弦长也是2,则这个扇形的面积为( ) A...
若扇形圆心角的弧度数为2,且扇形弧所对的弦长也是2,则这个扇形的面积为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889018855/SYS201311012315278890188007_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889018855/SYS201311012315278890188007_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889018855/SYS201311012315278890188007_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889018855/SYS201311012315278890188007_ST/3.png)
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已知
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,x∈(π,2π),则tanx等于( )
A.
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B.
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C.
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D.
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已知函数f(x)=x
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)的大小关系是( )
A.f(
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)<f(1)<f(
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)
B.f(1)<f(
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C.f(
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)<f(1)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231527889018855/SYS201311012315278890188004_ST/0.png)
零点的个数是( )
A.0
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下列结论中正确命题的个数是
①命题p:“∃x∈R,x
2-2≥0”的否定形式为¬p:“∀x∈R,x
2-2<0;
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③“M>N”是“
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”的充分不必要条件( )
A.0
B.1
C.2
D.3
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