首页
数列{an}满足a1=a2=1,,若数列{an}的前n项和为Sn,则S2013的值为A.2...
试题详情
数列{a
n}满足a
1=a
2=1,
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAANwAAAAjCAYAAAD/nmRNAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAABXxJREFU
eF7tXAmSpSAM7bmy1/EmnsNTeAmH3RBQFiOIP7+qa/qPSsIjj2zY/3bx+eMPI8AItEFAEo4/jAAj
0AaBvzZiWAojwAioaJJhYASqEFhnmYron2nZt6pBfu8hJtzvrfn9GW/LPs2rGWfdZ0k69/3+8OON
IDGYd4vIlf5MuPFWt7vG27p6Hm1bph/1cnqzmddtX2bh5ZXXvyYeE667+X5AAWlo2OMpQ5RzE8Y4
6dBTfzce0Yaj4N9pGTMwXWcTWmd4eSbcB+y99xSkwfm2ZkMsSbZplzySXlASap21B9iWWf2/+GWf
hs0B2cP1tr3fk+/lc2b6hkTLrMlmvRwk5WqvSe84LOHscnMO93uG32XG0oOFOYvK6VwIGfNi4Dkv
HO0yiaZCOaRsCve3hDkv5U1L52zQm9lw0t0mPaApLihyZuQ+X0GOCfeVlWw8D0kUjyfCU6nvQU5m
87h1X3TSposoJoyEFc51WcJZDOwBYxsSE66xoX5BnKvKeZVGWwzRxRHfm8kqngk9lXf7O+4x370Q
1KVGdPmda9JHqqPBmgCdcOXUm3vSM4fenp5wdqcbwbJG0nUEPCl1JKpeWqLVqKbJFc9Rk1xzAmVB
xRaPnjjaNZIRD6Dr1c4cu1ZjWG98Jmw11GkpMar7CKKIFoZubMMRTJO7ZFAQFnvaHO5SsLo2ds4w
YhI5JRM+u3ckXavnezSe4+ce4fVjJz6iOtPUVaFY3vGlalU9rxCTdTTN4011X3I92cQ4xjaCoo7w
vHNpgx4UiQzhDOjotECu24zH9HahIHD35NxfSIkjNCD8+7t0vT9fjbfLQ0xu4vfDjuu6nA8wQD22
TRQ1cs4L3tb7sjd33lTHcnOjg5i+bq4Ks2Mjcg37okkeuZwinDJCj13HCYGicfVgyAUfI5DKKVYs
8sAAuuYaTTRXATtrFC5kTPbYFSYoLtuX6lRyv9Tz8mxmRlPdzrXewwn7X+zWAjetinBSKXOM8afK
uDhUuJOwnhkxtZwnCfdGXWvmmzrFoQ7bwjASeURt/aqqqEiTG/LU6AqeuSJcuqlOEFaKOTu+GSei
2hg14SQmXNCUBGyswu2EcORyqpRDD42ka818Aw+GBglCzLCM7Z7A5fwafXKfOd0oMprqSEZNlTIM
G3XuOIlTNaXpm1YHhJR+mGeTUrnrbYLRuQiB+06MmFxOSrWUsZmdK7ZpN9UVvshJ7kH8JrNee5j0
o+vYs6OdPtw0U4tQe90vpXuk985d4qb6ubz8Plw8bFQ2UX3m8zhraUJKWOCApKsFLPIcDE1UCPuQ
HBsCqDAorLplzaiVrrAo8ZgHQVXKoNIIX5dBeHk4FIaUN0PRWFsgfkSMsHp69RZ7dTgpLO6sLZBl
jG+5KVnSP9kle+h/Frp+9kVOgb3zBvYVlkLgUwWfwuH63e4XIDO7gnYXNCVjsxPQvzBYIKc74Sh1
NeaQKnL0s5oyyTId8bIM3DzOHG54PG4d7TK7lnWPtY3xJNaZcroTTsWueidPYZLUVYPSLkdKLgLd
DXftBPUC6RR7fqRYWJzp4XQcOonG52wSezkYvYe7lnPZtA4KDg1CygtMynQF5H3eDppJKPnTA82U
6iwom3D+Qc4bjfHEhLPlJL3G84Sj01XuZ62OTTW2uMeKQY3nQSQuk3DIeO80xi8VL5DTnXB0ugbv
lhEt7luG+d2/6hWuQB7hEMEeyzVK5PQmHJWuKiwFJYbkvN5CowI97uZxBaLefmsW4TDBbGxOncOR
yUH9I/J+cqTAUYOJPabkN2W/FlpenF55Ozse0C+LcA/I5SG/jABsIAfvk3154um5MeHSGPEdjAAZ
Akw4Mih5IEYgjQATLo0R38EIkCHAhCODkgdiBNII/Aepfq8XI1vgqwAAAABJRU5ErkJggg==
)
,若数列{a
n}的前n项和为S
n,则S
2013的值为( )
A.2013
B.671
C.-671
D.
相关试题
-
数列{an}满足a1=a2=1,
,若数列{an}的前n项和为Sn,则S2013的值为( )
A.2013
B.671
C.-671
D.
-
数列{an}满足a1=a2=1,
,若数列{an}的前n项和为Sn,则S2013的值为( )
A.2013
B.671
C.-671
D.
-
已知
(n∈N*),数列{an}前n项的和为Sn,则S2013的值为( )
A.2013
B.0
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAkCAYAAACAGLraAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAARlJREFU
SEvVVIENhCAMhI3Yxy0YgiXYgQGYg8QdWKLfokhBH5XEN09igoQed+21EnCJZkkp26PD/xRKAO3C
20fHh2f/AhAs5Wn5bKikXJAQwG5BuEcQjnEOECNE9mawdwFYcPR6RAIhRPB6OAcVBdCYA+2LKAFu
WjM8bTd7RmplCOdcCjRKgDJz2nedSCVlZShVSEwWFt8BKBcamAKoyjihPmLBARLlbCJRB6fHuK1m
o0Ao05fQtNTOSMTi/W68PAzWYcSStLptS1r/f5fEOy/nu9dn1xf0pwGWLmyG0PlEyjeyC8cAogfr
wygDpG49jpFBCcHmphkBwH4vmgcAaOqW9i17PsZ4GU58MMCgNtz7AOft9XQv/IDBB//s7vl+kfXS
AAAAAElFTkSuQmCC
)
D.
-
正数列{an}的前n项和Sn满足:2Sn=anan+1-1,a1=a>0.
(1)求证:an+2-an是一个定值;
(2)若数列{an}是一个单调递增数列,求a的取值范围;
(3)若S2013是一个整数,求符合条件的自然数a.
-
等差数列{an}中,Sn是前n项和,a1=-2010,
,则S2013的值为________.
-
等差数列{an}中a1=2013,前n项和为Sn,
=-2,则S2013的值为________.
-
在等差数列{an}中,a1=-2013,其前n项和为Sn,若
=2,则S2013的值等于________.
-
在等差数列{an}中,a1=-2013,其前n项和为Sn,若
=2,则S2013的值等于________.
-
在等差数列{an}中,a1=-2013,其前n项和为Sn,若
,则S2013的值等于( )
A.-2012
B.-2013
C.2012
D.2013
-
在等差数列{an}中,a1=-2013,其前n项和为Sn,若
,则S2013的值等于( )
A.-2012
B.-2013
C.2012
D.2013