数列AN满足A1=2,AN+1=AN^2+6AN+6,设CN=LOG5(AN+3),证{CN}为等比
数列AN满足A1=2,AN+1=AN^2+6AN+6,设CN=LOG5(AN+3),证{CN}为等比
已知数列{an}满足a1=6,an+1-an=2n,记cn=a
已知数列{an},{cn}满足条件:a1=1,an+1=2an+1,cn=1(2n+1)(2n+3).
已知数列an满足a1=2,an+1-2an+1=0,记bn=an-1.,设cn=lg(2an+1-an-1),证明数列c
己知数列{an}是首项a1=1/2,公比q=1/2的等比数列,设bn+2=3log1/2an,数列{Cn}满足Cn=an
已知数列an,bn,cn满足[a(n+1)-an][b(n+1)-bn]=cn 若数列an的通项公式为an=2n-1 设
数列an满足a1=2an+1=2n+1an/【(n+1/2)an+1+2n】(1)bn=2n/an求bn通向(2)设cn
数列an=2^(n-1),数列cn满足,对任意正整数c1/a1+c2/a2+...+cn/an=22+(2n-11)/2
已知数列an满足:a1=a2=1,an+2=an+1+an,若cn=an-4bn,bn属于整数,且cn大于等于0小于4,
设数列an满足a1=2 an+1-an=3-2^2n-1
已知数列an满足 a1=1/2,an+1=3an/an+3求证1/an为等差数列
a1=3,an=2an-1+3 证{an+3}等比,并求an