若数列(An)满足:a1=1,an+1=2an,(n∈N*),则a5=
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/23 07:37:05
若数列(An)满足:a1=1,an+1=2an,(n∈N*),则a5=若数列(An)满足:a1=1,an+1=2an,(n∈N*),则a5=若数列(An)满足:a1=1,an+1=2an,(n∈N*)
若数列(An)满足:a1=1,an+1=2an,(n∈N*),则a5=
若数列(An)满足:a1=1,an+1=2an,(n∈N*),则a5=
若数列(An)满足:a1=1,an+1=2an,(n∈N*),则a5=
a1=1,an+1=2an 由此可知an为首项为1,公比为2的等比数列.通项an=2^(n-1)
所以a5=2^4=16
如果不懂,请Hi我,祝学习愉快!
1
16吧!一楼怎么算成17了?2^4=16啊!
q=a(n+1)/an=2
{an}是等比数列
a5=a1*q^4=1*2^4=16
an+1=2an,
q=an+1/an=2
a5=a1*q^4
=1*2^4=16
数列{An}满足a1=1/2,a1+a2+..+an=n方an,求an
已知数列{an}满足a1=1 an+1=an/(3an+1) 则球an
数列{an}满足a1=a,an+1=1+1/an.若3/2
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
数列{an}满足a1=1 an+1=2n+1an/an+2n
已知数列{an}满足an+1=an+n,a1等于1,则an=?
数列{an}满足a1=1,且an=an-1+3n-2,求an
数列an满足a1=2,an+1=4an+9,则an=?
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
数列an满足a1=2,an+1=an²求an
数列an满足a1=2,an+1=an²求an
数列[An]满足An+1-An+3=0,且A1=-5.求An.
关于数列、等差数列的题目设数列an满足an+1=an-2且a1=241)判断an是什么数列2)若an
已知数列{an}中满足(An+1-An)(An+1+An)=16,且a1=1,an
若数列{An},满足关系a1=2,an+1=3an+2,求数列的通项公式
若数列【an】满足a1等于1,An+1=2an+3n,则数列的项A5
若数列{an}满足a1=1,a2=5且an+2=an+1-an,求a2000
若数列an满足a1=0.5 an+1=an/5an+1 则an=?an+1为an的后一项