首页
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=.A.-20...
试题详情
等差数列{a
n}的前n项和为S
n,已知a
1=-2010,
-
=2,则S
2010=( ).
A.-2008
B.2008
C.-2010
D.2010
相关试题
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
等差数列{an}的前n项和为Sn,已知a1=-2010,-=2,则S2010=( ).
A.-2008
B.2008
C.-2010
D.2010
-
在数列{an}中,若an+an+2=2an+1,且a1+a2+a3+…+a2009=ta1005,则t=( )
A.2007
B.2008
C.2009
D.2010