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已知f(x)是定义在R上的周期函数,其最小正周期为2,且当x∈[-1,1)时,f...
已知f(x)是定义在R上的周期函数,其最小正周期为2,且当x∈[-1,1)时,f(x)=|x|则函数y=f(x)的图象与函数y=log4x的图象的交点个数为( )
A.3
B.4
C.6
D.8
考点分析:
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3B.48cm
3C.32cm
3D.28cm
3
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设向量
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满足:|
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|=1,|
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|=2,
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•(
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)=0,则
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与
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B.60°
C.90°
D.120°
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下列命题错误的是( )
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2+x-m=0有实根”的逆否命题为“若方程x
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已知集合A={x|x
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x-1>1},则A∩B=( )
A.{x|x>3}
B.{x|x>1}
C.{x|x<-1}
D.{x|-1<x<1}
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