等比数列{an}满足:a1=1/2,且an-an-1=1/2的n次方,求an
等比数列{an}满足:a1=1/2,且an-an-1=1/2的n次方,求an
数列{an}满足a1=1,且an=an-1+3n-2,求an
已知等比数列{an}中有an+1-an=n×2^n且a1=1求an
已知数列{AN}满足A1=1,AN+1=2AN+2的N次方.
已知数列{an}满足a1=1,a(n+1)=3an+2(n属于N) 1.求证数列{an+1}是等比数列 2.求{an}的
已知数列{an}的首项a1=1,且{an}满足an=n(n+an-1),其中n大于等于2,求{an}的通项
已知数列{an}满足:a1+a2+a3+…+an=n-an 求证{an-1}为等比数列 令bn=(2-n)(an-1)求
已知数列{an中}a1=3.且an+1=an+2的n次方
已知数列an满足:an+1-2an=2^n+1,且a1=2 (1)证明{an/2^n}是等差数列 (2)求数列an的
已知数列{an}满足an+1=2an+3.5^n,a1=6.求an
已知数列{an}满足a1=1,an+1=2an+1 1)求证:数列{an+1}为等比数列; 2) 求{an}的通项an
已知数列{an}满足:a1=1,且an-an-1=2n,求(1)a2,a3,a4.(2)求数列{an}的通项an