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数列{an}满足a1=1,a2=,并且an(an-1+an+1)2an+1an-1(n≥2...
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数列{a
n}满足a
1=1,a
2=
,并且a
n(a
n-1+a
n+1)2a
n+1a
n-1(n≥2),则数列的第2012项为( )
A.
B.
C.
D.
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数列{an}满足a1=1,a2=,并且an(an-1+an+1)2an+1an-1(n≥2),则数列的第2012项为( )
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C.
D.
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数列{an}满足a1=1,a2=,并且an(an-1+an+1)2an+1an-1(n≥2),则数列的第2012项为( )
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数列{an}中,已知a1=-2,a2=-1,a3=1,若对任意正整数n,有anan+1an+2an+3=an+an+1+an+2+an+3,且an+1an+2an+3≠1,则该数列的前2010 项和S2010=( )
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