数列满足A1=1,A2=3.并且An+2-4An+1+4An=0.1、证明{An+1-2An}是等比数列(此题不用证明了) 2、令Bn=An/(2^n),求数列{Bn}的前n项和.
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 12:42:59
数列满足A1=1,A2=3.并且An+2-4An+1+4An=0.1、证明{An+1-2An}是等比数列(此题不用证明了)2、令Bn=An/(2^n),求数列{Bn}的前n项和.数列满足A1=1,A2
数列满足A1=1,A2=3.并且An+2-4An+1+4An=0.1、证明{An+1-2An}是等比数列(此题不用证明了) 2、令Bn=An/(2^n),求数列{Bn}的前n项和.
数列满足A1=1,A2=3.并且An+2-4An+1+4An=0.
1、证明{An+1-2An}是等比数列(此题不用证明了)
2、令Bn=An/(2^n),求数列{Bn}的前n项和.
数列满足A1=1,A2=3.并且An+2-4An+1+4An=0.1、证明{An+1-2An}是等比数列(此题不用证明了) 2、令Bn=An/(2^n),求数列{Bn}的前n项和.
An=3^(n-1)……应该没错吧
Bn=3^(n-1)/(2^n)……不又是个等比数列了吗?
数列an满足a1=1,a2=1/3,并且an(an-1+an+1)=2an+1an-1.则数列第2012项为?
数列{An}满足a1=1/2,a1+a2+..+an=n方an,求an
数列{an}满足a1=1,a2=3,an+2-4an+1+4an=0数列满足A1=1,A2=3.并且An+2-4An+1+4An=0.1、证明{An+1-2An}是等比数列
已知数列an满足an=1+2+...+n,且1/a1+1/a2+...+1/an
数列an满足a1=1/2,a1+a2+a3……an=n^2an,则an
数列﹛an﹜满足a1=1,a2=1/2,并且an(an-1+an+1)=2an+1an-1(n≥2),则数列﹛an﹜的第2010项为____
已知数列an'满足a1=1/2,a1+a2+a3+...+an=n^2an,求通项公式
设数列AN满足A1等于1,3(A1+a2+~+AN)=(n+2)an,求通向公式
已知数列{an}满足a1=1,a2=3,an+2=3an+1-2an求an
已知数列满足a1=1/2,an+1=2an/(an+1),求a1,a2已知数列满足a1=1/2,a(n+1)=2an/(an+1),求a1,a2;证明0
已知数列an满足a1=0 a2=1 an=(An-1+An-2)/2 求liman
已知数列an满足a1=0 a2=1 an=(An-1+An-2)/2 求liman
数列An,满足An=An-1 + An-2,其中,A1=1,A2=1,求通项公式.
若数列{an}满足a1=1,a2=5且an+2=an+1-an,求a2000
数列{an}满足a1=3,a2=6,an+2=an+1-an,求a2013
数列{an}满足a1=3,a2=6,an+2=an+1-an,求a2008
几个数列问题.已知数列{an} a1=1,an+1=an/(1+n^2*an) 求an 已知数列{an} 满足a1=1 a1*a2*a3.*an=n^2 求an
设数列{an}满足lg(1+a1+a2+...+an)=n+1,求通项公式an