已知数列{an}满足an+1=an-an-1(n≥2),a1=a,a2=b,记Sn=a1+a2+a3+…+an,则下列结论正确的是( )
A.a2008=-a,S2008=2b-a |
B.a2008=-b,S2008=2b-a |
C.a2008=-b,S2008=b-a |
D.a2008=-a,S2008=b-a |
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已知数列{an}满足an+1=an-an-1(n≥2),a1=a,a2=b,记Sn=a1+a2+a3+…+an,则下列结论正确的是( )
A.a2008=-a,S2008=2b-a |
B.a2008=-b,S2008=2b-a |
C.a2008=-b,S2008=b-a |
D.a2008=-a,S2008=b-a |
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