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数列{an}满足下列条件:a1=1,且对于任意的正整数n,恒有a2n=an+n,...
数列{an}满足下列条件:a1=1,且对于任意的正整数n,恒有a2n=an+n,则a2100的值为( )
A.1
B.299
C.2100
D.24950
考点分析:
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已知函数
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,则函数y=f(x)的大致图象为( )
A.
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B.
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C.
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D.
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程序框图如下:如果上述程序运行的结果为S=11880,那么判断框中应填入( )
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A.k>11
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C.k<11
D.k<9
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已知点F
1、F
2分别是椭圆
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的左、右焦点,过F
1且垂直于x轴的直线与椭圆交于A、B两点,若△ABF
2为正三角形,则该椭圆的离心率e是( )
A.
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B.
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C.
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D.
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=0.7x+0.35,那么表中t的值为( )
A.3
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C.3.5
D.4.5
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设a、b、c分别是方程
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的实数根,则( )
A.c<b<a
B.a<b<c
C.b<a<c
D.c<a<b
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