①数列﹛an﹜满足a1=3,an=an-1(n-1在右下方）-3 （n≥2),则数列﹛an﹜是?A:公差为3的等差数列 B：公比为3的等比数列 C：公差为-3的等差数列 D：公比为2的等比数列 ②数列﹛an﹜满足a1=3,an-1(n-1在右

已知数列{an}满足a1=1 an+1=an/(3an+1) 则球an 数列[An]满足An+1-An+3=0,且A1=-5.求An. 数列｛an｝满足a1=1,且an=an-1+3n-2,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 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,a2=3,an+2=3an+1-2an求an 已知数列{an}满足a1=1/2,an+1=3an+1,求数列{an}通项公式 数列an满足a1=1/2 an+1=an/(2an+3) 猜想数列通项公式 数列﹛an﹜满足a1=3,an=√an-1（n≥2）,则log3（a1•a2•···an）=…数列﹛an﹜满足a1=3,an=√an-1（n≥2）,则log3（a1•a2•···an）=………? 已知数列{an}满足3an+1+an=4,a1=9,求通项公式. 数列an满足a1=1/3,Sn=n(2n-1)an,求an 数列{an}满足Sn+Sn+1=5/3an+1,a1=4求an 数列{an}满足a1=a,an+1=1+1/an.若3/2 数列[An]满足a1=2,a（n+1）=3an-2 求an 数列﹛an﹜满足an+1-an=-anan+1,若a1=1,则a5等于 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? 已知数列[an]满足An+1=1+an /3-an ,且a1=1/3,求证数列[1/(an -1）]是等差数列,并求an 数列an满足a1=2,an+1=4an+9,则an=?