已知等差数列{an}的公差和等比数列{bn}的公比相等且都等于d(d大于0,且不等于1),又a1=b1,a3=3b3,a
已知等差数列{an}的公差和等比数列{bn}的公比相等且都等于d(d大于0,且不等于1),又a1=b1,a3=3b3,a
已知等差数列{an}的公差与等比数列{bn}的公比相等,且都等于d(d>0,且d≠1),又知a1=b1,a3=3b3,a
等差数列an的公差和等比数列bn的公比相等,且都等于d(d>0)d不等于0,若a1=b1,a3=5b3,a5=5b5求a
已知等差数列的公差与等比数列的公比相等,且都等于d,又知a1=b1,a3=3b3,a5=5b5,求an,bn
已知等差数列{an}的公差与等比数列{bn}的公比相等,且都等于d(d>0,且d≠1),又知a1=
已知等差数列{an}的公差和等比数列{bn}的公比都是d(d≠1),且a1=b1,a3=3b3,a5=5b5,求a1和d
{an}等差数列,{bn}等比数列,公差公比均为d,且a1=b1,a3=3b3,a5=5b5,求{an}和{bn}?
已知等差数列an的公差d不等于0,且a1,a3,a11恰好是某等比数列bn的前3项,则等比数列bn的公比等于多少?
等差数列{an}的公差和等比数列{bn}的公比都是d,d不等于1,且a1=b1,a4=b4,a10=b10,求1)a1和
等差数列{an}的公差和等比数列{bn}的公比都是d,d不等于1,且a1=b1,a4=b4,a10=b10
1``已知等差数列{An}的公差和等比数列{Bn}的公比都是d(d不为0)且a1=b1,a4=b4,a10=b10.
已知{an}是公差大于0的等差数列,{bn}是等比数列,且b1=a1*2,b2=a2*2,b3=a3*2,求{an}的前