在吗,等差数列an满足an*a(n+1)=n^2+3n+2,公差为
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在吗,等差数列an满足an*a(n+1)=n^2+3n+2,公差为
已知等差数列{an}满足a(n+1)=an+3n+2,且a1=2,求an.雪地跪拜!
数列{an}满足an+1=3an+n,问是否在适当的a1,使是等差数列
数列满足an=3a(n-1)+3^n-1 求证{an-3^n}不是等差数列
数列an满足:a1=1,a(n+1)=an/an +1 (1)证明1/an是等差数列.(2)数列an的通项公式
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已知数列{an}满足2an/an+2=an+1(n属于正整数),a1=1/1006.求证:数列{1/an}是等差数列,并求通项an已知数列{an}满足(2an)/(an+2)=a(n+1)(n属于正整数),a1=1/1006.求证:数列{1/an}是等差数列,并求通项an,
设数列{an}满足an=2an-1+n 若{an}是等差数列,求{an}通项公式
若等差数列{an}满足递推公式an+1=- an+n.则a5等于多少?
设数列an的前n项和为Sn,满足an+sn=An^2+Bn+1(A不等于0)an为等差数列,求(B-1)/A
【高考】若数列{an}满足,a1=1,且a(n+1)=an/1+an,证明,数列{1/an}为等差数列,并求出数列{an}的通...【高考】若数列{an}满足,a1=1,且a(n+1)=an/1+an,证明,数列{1/an}为等差数列,并求出数列{an}的通项公式
数列{an}满足a1=1,a(n+1)=an/(an+1),令bn=1/an,证明{bn}为等差数列
已知{an}满足a1=2,a(n+1)=(2an)/(an+2),求证{1/an}为等差数列.
已知数列{an}满足a1=2,a(n+1)=2an/(an+2),证明:数列{1/an}为等差数列
数列{an}满足a(n+1)=3an+n(n属于正整数),是否存在a1,使{an}成等差数列
在数列{an}中,a1=2,a(n+1)=an+2^n+1?(1)求证:数列{an-2^n}为等差数列;?(2)设...在数列{an}中,a1=2,a(n+1)=an+2^n+1?(1)求证:数列{an-2^n}为等差数列;?(2)设数列{bn}满足bn=2log2(an+1-n),证明:(1+1/b1)(1+1/b2
已知数列{an}满足:a1=2a,an=2a-a*a/an-1(n(-N*,n>=2).bn=1/an-a1.求证BN是等差数列.2.求数列AN的通项公式.
An为等差数列,且满足A(n+1)=An²-nAn+1,n=1,2,3……求An的通项公式