已知数列{an},a1=1,{an*a(n+1)},等比q=3,则log3(a2000)={an*a(n+1)}中n+1是下标,log3(a2000)中底数为3
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 09:57:05
![已知数列{an},a1=1,{an*a(n+1)},等比q=3,则log3(a2000)={an*a(n+1)}中n+1是下标,log3(a2000)中底数为3](/uploads/image/z/12509741-29-1.jpg?t=%E5%B7%B2%E7%9F%A5%E6%95%B0%E5%88%97%7Ban%7D%2Ca1%3D1%2C%7Ban%2Aa%28n%2B1%29%7D%2C%E7%AD%89%E6%AF%94q%3D3%2C%E5%88%99log3%28a2000%29%3D%7Ban%2Aa%28n%2B1%29%7D%E4%B8%ADn%2B1%E6%98%AF%E4%B8%8B%E6%A0%87%EF%BC%8Clog3%28a2000%29%E4%B8%AD%E5%BA%95%E6%95%B0%E4%B8%BA3)
xŐN@_N$4m^D=&ZVOZm-Ul%&FzPG|w8\9gSMf=#j]ȑ +2].8dٓM$AVCxpUrZ+$"Fd#Y2n2o?-ܪSb|C[K;BJ{j)wERo4$ga>qD$;qؾ̭>~Q+`ɂرfׇY|o }SI>ёXD{2ƲPj~OW1
已知数列{an},a1=1,{an*a(n+1)},等比q=3,则log3(a2000)={an*a(n+1)}中n+1是下标,log3(a2000)中底数为3
已知数列{an},a1=1,{an*a(n+1)},等比q=3,则log3(a2000)=
{an*a(n+1)}中n+1是下标,log3(a2000)中底数为3
已知数列{an},a1=1,{an*a(n+1)},等比q=3,则log3(a2000)={an*a(n+1)}中n+1是下标,log3(a2000)中底数为3
[a(n+1)a(n+2)]/[ana(n+1)]=3
那么有a(n+2)=3an;
因此a2000=(a2)*3^999
log3(a2000)=log3((a2)*3^999)=log3(a2)+999
你这个题缺个条件,或者求a2000不对,上面是最好的结果了
若an^2+2是以3为公比的等比数列,则能解。
已知数列{an}满足a(n+1)=an+n,a1=1,则an=
已知数列{an},A1=1 A(n+1)=2an/an+2 求a5
已知数列{an}满足a(n+1)=an+lg2,a1=1,求an
已知数列{an}中,a(n+1)=an+2^n,a1=3,求an
已知数列{an}满足a1=1 an+1=an/(3an+1) 则球an
已知数列an满足a1=1,a(n+1)=an/(3an+1) 求数列通项公式
已知数列an满足a1=1,a(n+1)=an/(3an+2),则an=?
已知数列an满足条件a1=-2 a(n+1)=2an/(1-an) 则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}中a1=1/2,a(n+1)=(2an)/(4an+3),求an.
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
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},a1=-1,a(n+1)=an+n,求通项公式
已知数列{an}满足a1=1,3a(n+1)+an-7
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}中,a1=1/2,an+1+3an=0,an=( )
已知数列{an}中a1=1,an+1=3an/an +3,求通项公式