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函数f(x)=sinx-cosx(x∈R)的最小正周期是( ) A. B.π C...
函数f(x)=sinx-cosx(x∈R)的最小正周期是( )
A.
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B.π
C.2π
D.3π
考点分析:
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已知 m∈R,向量
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=( )
A.1
B.
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C.±1
D.
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已知集合A={(x,y)|x+y=0,x,y∈R},B={(x,y)|x-y=0,x,y∈R},则集合A∩B的元素个数是( )
A.0
B.1
C.2
D.3
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在xOy平面上有一系列的点P
1(x
1,y
1),P
2(x
2,y
2),…,P
n(x
n,y
n)…对于正整数n,点P
n位于函数y=x
2(x≥0)的图象上,以点P
n为圆心的⊙P
n与x轴相切,且⊙P
n与⊙P
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.
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根据定义在集合A上的函数y=f(x),构造一个数列发生器,其工作原理如下:
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∈A,计算出x
1=f(x
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1,并将x
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![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024183441842175768/SYS201310241834418421757024_ST/0.png)
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(m∈N
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