首页
已知{an}满足a1=1,an+1=2an+1,则{an}通项为A.B.C.D.
试题详情
已知{a
n}满足a
1=1,a
n+1=2a
n+1,则{a
n}通项为( )
A.
B.
C.
D.
相关试题
-
已知数列{an}满足:a1=,a2=,an+1=2an-an-1(n≥2,n∈N*),数列{bn}满足b1<0,3bn-bn-1=n(n≥2,n∈N*),数列{bn}的前n项和为Sn.
(1)求数列{an}的通项an.
(2)求证:数列{bn-an}为等比数列.
-
已知{an}满足a1=3,an+1=2an+1,求这个数列的通项公式an.
-
已知{an}满足a1=1,an+1=2an+1,则{an}通项为( )
A.
B.
C.
D.
-
已知{an}满足a1=1,an+1=2an+1,则{an}通项为( )
A.
B.
C.
D.
-
已知{an}满足a1=1,an+1=2an+1,则{an}通项为( )
A.
B.
C.
D.
-
已知数列{an}满足a1=1,an=2an-1+1(n≥2),则a2=( )
A.1
B.3
C.5
D.7
-
已知数列{an}满足要求a1=1,an+1=2an+1,则a5=( )
A.15
B.16
C.31
D.32
-
已知数列{an}满足a1=3,an+1=2an+1,则数列{an}的通项公式an=________.
-
已知数列{an}满足a1=1,an+1=2an+1(n∈N*).
(I)求数列{an}的通项公式;
(II)证明:.
-
已知数列{an}满足a1=1,an+1=2an+1(n∈N*)
(1)求数列{an}的通项公式;
(2)若数列{bn}满足,证明:{bn}是等差数列;
(3)证明:.