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如图,给出一个算法的伪代码,已知输出值为3,则输入值x= .
如图,给出一个算法的伪代码,已知输出值为3,则输入值x=
.
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若函数y=2tanωx的最小正周期为2π,则函数y=sin
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的最小正周期为
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已知函数f(x)=x
2-2x,g(x)=ax+2(a>0),若∀x
1∈[-1,2],∃x
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A.
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B.
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C.(0,3]
D.[3,+∞)
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设函数
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的图象关于直线x=
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对称,它的周期是π,则( )
A.f(x)的图象过点(0,
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)
B.f(x)在[
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533561947/SYS201311031024395335619010_ST/3.png)
]上是减函数
C.f(x)的一个对称中心是(
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,0)
D.将f(x)的图象向右平移|φ|个单位得到函数y=3sinωx的图象
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设实数x,y满足x
2+y
2≤1,则点(x,y)不在区域
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内的概率是( )
A.
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B.
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C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533561947/SYS201311031024395335619009_ST/3.png)
D.
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已知函数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533561947/SYS201311031024395335619008_ST/0.png)
,则函数f(x)有两个相异零点的充要条件是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533561947/SYS201311031024395335619008_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533561947/SYS201311031024395335619008_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103102439533561947/SYS201311031024395335619008_ST/3.png)
D.-2<a<2
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