已知数列[an}满足a1=7/8,且a(n+1)=1/2an+1/3,(1)求证{an-2/3}是等比数列 (2)求数列
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}满足a1=7/8,且a(n+1)=1/2an+1/3,(1)求证{an-2/3}是等比数列 (2)求数列
已知数列{an}满足a1=1,a(n+1)=2an+1.求证(1)数列a(n+1)是等比数列;(2)求an
已知数列{an}中,a1=-1,a2=4,an+2+2an=3an+1 求证:数列{an+1-an}是等比数列,并求{a
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=2,a(n+1)=(3an-2)/(2an-1),求证{1/(an-1)}是等差数列,并求数列
数列an满足a1=-1,且an=3a(n-1)-2n=3,求a2,a3,并证明数列(an-n)是等比数列,求an
数列{an}满足a1=1,且an=an-1+3n-2,求an
已知数列{An},Sn是其前n项和,且满足3An=2Sn+n,n为正整数,求证数列{An+1/2}为等比数列
已知数列an满足an+1=3an+1,且a1=1/2,求证:数列{an+1/2}为等比数列
已知数列{an}满足a1=3 an*a(n-1)=2a(n-1)-1,求证数列{1/(an-1)}是等差数列,并求出数列
在数列an中,a1=1,且满足a(n+1)=3an +2n,求an