已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半...已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半就抵消不完)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 10:40:32
![已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半...已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半就抵消不完)](/uploads/image/z/1122248-56-8.jpg?t=%E5%B7%B2%E7%9F%A5%E6%95%B0%E5%88%97%7Ban%7D.a1%3D2.a%2Fan%3D2n%2B2%2Fn.%E6%B1%82%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F.%E6%B3%A8%EF%BC%88%2F%E6%98%AF%E5%88%86%E6%95%B0%E7%BA%BF%2Ca%E6%98%AF%E7%AC%ACn%2B1%E9%A1%B9%E9%A1%B9.%EF%BC%88%E7%B4%AF%E4%B9%98%E6%B3%95%E6%88%91%E5%81%9A%E4%B8%80%E5%8D%8A...%E5%B7%B2%E7%9F%A5%E6%95%B0%E5%88%97%7Ban%7D.a1%3D2.a%2Fan%3D2n%2B2%2Fn.%E6%B1%82%E9%80%9A%E9%A1%B9%E5%85%AC%E5%BC%8F.%E6%B3%A8%EF%BC%88%2F%E6%98%AF%E5%88%86%E6%95%B0%E7%BA%BF%2Ca%E6%98%AF%E7%AC%ACn%2B1%E9%A1%B9%E9%A1%B9.%EF%BC%88%E7%B4%AF%E4%B9%98%E6%B3%95%E6%88%91%E5%81%9A%E4%B8%80%E5%8D%8A%E5%B0%B1%E6%8A%B5%E6%B6%88%E4%B8%8D%E5%AE%8C%EF%BC%89)
xJ@_a.32͋p !
JZo" ]&7B|Ùsھ^NU rmڒ&H6KulBУ
/mPFg7i/Gz>:KEt{%zY><=̽_߱J4XccV$l˹,ZXThgcu)>2KjW\;;:vbMZDzC܆cٮ'Lh
已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半...已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半就抵消不完)
已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半...
已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半就抵消不完)
已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半...已知数列{an}.a1=2.a/an=2n+2/n.求通项公式.注(/是分数线,a是第n+1项项.(累乘法我做一半就抵消不完)
a(n+1)/an=2[(n+1)/n],所以,
a2/a1=2[2/1],a3/a2=2[3/2],a4/a3=2[4/3],…,an/a(n-1)=2[n/(n-1)],累乘,得:
an/a1=2^(n-1)×[n],所以,an=n×2^n.
已知数列{an},A1=1 A(n+1)=2an/an+2 求a5
已知数列{an}中,a(n+1)=an+2^n,a1=3,求an
已知a(n+1)=2an/an+2,a1=21.求证:数列{1/an}是等差数列2.求数列{an}的通项公式
已知数列an满足条件a1=-2 a(n+1)=2an/(1-an) 则an=
已知数列an满足a1=1,a(n+1)=an/(3an+2),则an=?
已知数列{an}中a1=1/2,a(n+1)=(2an)/(4an+3),求an.
已知数列{an},a1=1,a(n+1)=an^2+an+1,求通项公式an
已知数列{An}中,A1=1,A(n+1)=An/(1+2An),求An
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.
已知数列{an}满足a1=2,an+1=2an/an+2.求证数列{1/an}是否为等差数列 并求出an
已知数列{an}中,a1=1/2,an+1+3an=0,an=( )
已知数列{an},a1=1,an+1=2an/an+2,求a5
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知数列an,a1=1 an+1-an=2的n次幂求an
数列题,求通项已知数列{An}满足A=2An/(1-An),A1=2,求数列{An}的通项公式
已知数列{An}满足a1=1,a(n+1)=2an+1 求证数列{an+1}是等比数列 求数列{an}通式
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=1/2,2an+1-an=1.1.求an的通项公式 2.证明:求和Sn=a已知数列an满足a1=1/2,2an+1-an=1.1.求an的通项公式2.证明:求和Sn=a1+a2+···+an