若等差数列{an}满足an×an+1=n²+3n+2,则公差为1,还是±1?求详解,

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? 数列｛an｝满足an+1+an=4n-3(n∈N*).若｛an｝是等差数列,求其通项公式 已知数列{An}满足A1=1,An+1=2An+2^n.求证数列An/2是等差数列 数列an满足an+1=3an+n,是否存在适当的a1,使{an}是等差数列,说明理由 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 【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 已知数列an满足:an+1-2an=2^n+1,且a1=2 (1)证明{an/2^n}是等差数列 (2)求数列an的 已知数列an满足a1=3,An+1=2An+2^n (1)求证数列[An/2^n]是等差数列 (2)求an通项公式 【高中数学】等差数列{An}满足An-2+An-1+An+1+An+2=8n-48(n大于2),则nSn取最小值时,SN=? 已知等差数列{an}满足a(n+1)=an+3n+2,且a1=2,求an.雪地跪拜! 设等差数列满足an=2an-1+n(n=2,3,.).求通项公式设等差数列满足an=2an-1+n(n=2,3,.)（1）若an是等差数列,求an的通项公式（2）an是否可能为等比数列?若可能,求出此数列通项公式,若不可能,说明理由.过 已知等差数列{an}满足an+1=an²-nan+1,则an=______. 满足an+1-an=an-an-1 可以证明是等差数列么? 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 若数列an满足a1=1,且an+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 已知数列an满足an=2a(n-1)+2^n-1,a4=81,若数列{(an+p)/2}为等差数列,求p 若等差数列{an}满足an×an+1=n²+3n+2,则公差为1,还是±1?求详解,