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若,则该数列的前2011项的乘积a1•a2•a3•…•a2010•a2011=A.3B.-...
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若
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)
,则该数列的前2011项的乘积a
1•a
2•a
3•…•a
2010•a
2011=( )
A.3
B.-6
C.-1
D.
相关试题
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若
,则该数列的前2011项的乘积a1•a2•a3•…•a2010•a2011=( )
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若
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若
,则该数列的前2012项的乘积a1•a2•a3•…•a2011•a2012=( )
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设{an}为公比q>1的等比数列,若a2009和a2010是方程4x2-8x+3=0的两根,则a2011+a2012=( )
A.18
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设{an}为公比q>1的等比数列,若a2009和a2010是方程4x2-8x+3=0的两根,则a2011+a2012=( )
A.18
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设{an}为公比q>1的等比数列,若a2009和a2010是方程4x2-8x+3=0的两根,则a2011+a2012=( )
A.18
B.10
C.25
D.9
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设{an}为公比q>1的等比数列,若a2009和a2010是方程4x2-8x+3=0的两根,则a2011+a2012=( )
A.18
B.10
C.25
D.9
-
设{an}为公比q>1的等比数列,若a2009和a2010是方程4x2-8x+3=0的两根,则a2011+a2012=( )
A.18
B.10
C.25
D.9
-
已知a2010与a2011是首项为正数的等差数列{an}相邻的两项,且函数y=(x-a2010)(x-a2011)的图象如图所示,则使前n项和Sn>0成立的最大自然数n是( )
![](https://img.xintiku.com/upload/5c/83/5c83e9e3a156b22c40bd3c6d94c57b92.png)
A.4017
B.4018
C.4019
D.4020
-
在数列{2n-1}的前2011项中任意选取若干项相乘(当只取到一项时,乘积就为所选项本身),记所有这样的乘积和为S,则log2(S+1)的值为( )
A.1005×2011
B.1006×2011
C.2010×2011
D.2011×2011