有关数列的一道选择题设有公差不等于零的等差数列{an}与等比数列{bn},两个数列有关系;a1=b1,a3=b3,a7=
有关数列的一道选择题设有公差不等于零的等差数列{an}与等比数列{bn},两个数列有关系;a1=b1,a3=b3,a7=
设正项数列{an}是公差不为零的等差数列,正项数列{bn}是等比数列,且a1=b1,a3=b3,a7=b5
数列{an}是公差不为零的等差数列,{bn}是等比数列,且a1=b1=1,a3=b3,a7=b5,求数列{an}与{bn
设等差数列{an}的公差d≠0,数列{bn}为等比数列,若a1=b1=a,a3=b3,a7=b5
等差数列{an}的公差d≠0,数列{bn}是等比数列,若a1=b1,a3=b3,a7=b5,则b11=( )
设公差为非零的等差数列{An}与等比数列{Bn},满足A1=B1,A3=B3,A7=B5,求公比q
设等差数列{an}的公差d≠0,数列{bn}为等比数列,若a1=b1,b2=a3 b3=a2,则bn的公比为
设公差d不等于零的等差数列{an}和等比数列{bn}满足a1=b1.a3=b3.a7=b5.求使an=bm成立的n=f(
设公差d不等于0的等差数列{an}和等比数列{bn}满足a1=b1,a3=b3,a7=b5,求使an=bm成立的n与m的
设公差为非零的等差数列{An}与等比数列{Bn},满足A1=B1,A3=B3,A7=B5,试问对怎样的n,m,可使An=
公差不为零的等差数列{an}中,有2a3-a7²+2a11=0,数列{bn}是等比数列,且b7=a7,则b6b
已知公差不为零的等差数列{an}与等比数列{bn}中,b1=a2=1,b2=a3,b3=a6 (1)求数列{an}{bn