数列{an}中,a1=3,a(n+1)=3-(1/an-1)求证{1/(an-2)}是等差数列
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
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
已知数列{an}中,a1=1,a(n+1)=an/3an+1,(1)求证数列{1/an}为等差数列 (2)求数列{an}
已知数列{An}满足A1=1,An+1=2An+2^n.求证数列An/2是等差数列
在等差数列{an}中,a1=1,a2=3,an+2=3an+1-2an(n属于N+)证明数列{an+1-an}是等比数列
已知数列{an}中a1=-1且(n+1)an,(n+2)an+1(是下标)成等差数列,设bn=(n+1)an-n+2求证
已知数列{an}满足an+an+1=2n+1(n∈N*),求证:数列{an}为等差数列的充要条件是a1=1.
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=1/2,an+1=3an/an+3求证1/an为等差数列
在数列{an}中,a1=2,a(n+1)=an+2^n+1?(1)求证:数列{an-2^n}为等差数列;?(2)设...
已知f(x)=3x/(x+3),数列{an}满足an=f(an-1) (n>1,a1≠0)求证①{1/an}是等差数列
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