设已知数列{an}满足a1=1,an-2an-1-2的n-1次方=0(n∈N*,n≥2).求证:数列{2的n次方分之an}是等差数列.若数列{an}的前n项和为sn,求sn.
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 00:56:31
设已知数列{an}满足a1=1,an-2an-1-2的n-1次方=0(n∈N*,n≥2).求证:数列{2的n次方分之an}是等差数列.若数列{an}的前n项和为sn,求sn.设已知数列{an}满足a1
设已知数列{an}满足a1=1,an-2an-1-2的n-1次方=0(n∈N*,n≥2).求证:数列{2的n次方分之an}是等差数列.若数列{an}的前n项和为sn,求sn.
设已知数列{an}满足a1=1,an-2an-1-2的n-1次方=0(n∈N*,n≥2).求证:数列{2的n次方分之an}是等差数列.若数列{an}的前n项和为sn,求sn.
设已知数列{an}满足a1=1,an-2an-1-2的n-1次方=0(n∈N*,n≥2).求证:数列{2的n次方分之an}是等差数列.若数列{an}的前n项和为sn,求sn.
已知数列{an},{bn}满足a1=2,2an=1+2an*an+1,设{bn}=an-1求数列{1n}为等差数列急!!!
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知数列{an}满足a1=1 an+1=an/(3an+1) 则球an
已知数列满足a1=1 ,an+1+2an=2 求an
已知数列an满足条件a1=-2 an+1=2an+1则a5
已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an
已知数列{an}满足a1=1,an+1·an=2^n 则s2012
已知数列{an}满足An+1=2^nAn,且A1=1,则通项an
已知数列{an}满足a1=1/2,sn=n^2an,求通项an
已知数列{an},满足a1=1/2,Sn=n²×an,求an
已知数列an满足a1=1/2 sn=n平方×an 求an
已知数列An满足 A1=1/2 Sn=N²An 求An
已知数列an满足an+1=nan,a1=2,求an通项
已知数列an满足a1=1 Sn=2an+n 求an
已知数列an满足 a1=1/2,an+1=3an/an+3求证1/an为等差数列已知数列an满足 a1=1/2,an+1=3an/an+3求证1/an为等差数列
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
已知数列{an}满足a1=1/2,an+1=3an+1,求数列{an}通项公式
已知数列an满足a1=1,1/an+1=根号1/an^2+2,an>0,求an