公比与公差如 a,6a,5,求公差a1和公比a1
公比与公差如 a,6a,5,求公差a1和公比a1
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
{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}?
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
a,b∈N,{an}是首项为a,公差为b的等差数列,{bn}是首项为b,公比为a的等比数列,且满足a1
数列,向量,1.在等差数列An中,A1=3,A3=6求公差,A10和S102.在等比数列An中,A1=2,A3=8求公比
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
求两数列的公差和公比在公差不为零的等差数列{an}和等比数列{bn}中,已知a1=1,且a1=b1,a2=b2,a8=b
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
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
已知等差数列{an}的公差和等比数列{bn}的公比都是d,又知d≠1,且a4=b4,a10=b10:(1)求a1与d的值
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