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函数f(x)=|x|•(|x|+|2-x|)-1有 个零点.
函数f(x)=|x|•(|x|+|2-x|)-1有 个零点.
考点分析:
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),则a、b、c的大小关系是( )
A.a>b>c
B.c>b>a
C.b>a>c
D.a>c>b
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下列命题中,真命题的个数为( )
(1)在△ABC中,若A>B,则sinA>sin B;
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102448158331855/SYS201311031024481583318008_ST/0.png)
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102448158331855/SYS201311031024481583318008_ST/1.png)
的图象,只需将
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的图象向左平移
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102448158331855/SYS201311031024481583318008_ST/3.png)
个单位.
A.1
B.2
C.3
D.4
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△ABC中,A=
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,BC=3,则△ABC的周长为( )
A.4
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sin(B+
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)+3
B.4
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sin(B+
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)+3
C.6sin(B+
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)+3
D.6sin(B+
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)+3
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