等比数列的公比为q,前n项和,成等差数列则公比为多少

等比数列的公比为q,前n项和,成等差数列则公比为多少 若Sn是公比为q的等比数列的前n项和且S4,S6,S5成等差数列,则公比q= 设等比数列an的公比为q,前n项和为sn,若s(n+1),sn,s(n+2)成等差数列,求q的值 设等比数列[an]的公比为q,前n项和为Sn,若S(n+1),Sn,S(n+2)成等差数列,则q的值? 设等比数列 ｛an｝ 的公比为q,前n项和为Sn,若S(n+1),Sn,S(n+2)成等差数列,则q= 已知等比数列｛αn｝的公比为q(q为实数）,前n项和为Sn,且S3,S9,S6成等差数列,则q3等于什么? 已知等比数列{An}的公比为q,前n项和为Sn,且S3,S9,S6成等差数列求证A2,A8,A5成等比数列 设等比数列｛an｝的公比为q,前n项和为Sn,若Sn+1,Sn,Sn+2成等差数列,则q的值为 设等比数列{An}的公比为q,前n项和为Sn,若Sn+1,Sn,Sn+2成等差数列,则q的值为（） 已知等比数列{an}的公比为q,前n项的和为Sn,且S3,S9,S6,成等差数列,则q的三次方等于多少, 等比数列﹛An﹜的公比为q,前n项的和为Sn,已知S5,S15,S10成等差数列,求q的值. 设等比数列an的公比为q 前n项和为Sn 若Sn+1 Sn Sn+2成等差数列 则q的值 已知等比数列{an}的公比为q,前n项和为Sn,且S3,S9,S6成等差数列,则q^3= 等比数列｛an｝的公比为q,其前n项和为Sn,若S3,S9,S6成等差数列,则q＾3＝过程 设等比数列{an}公比为q,a1不等于0,前n项和为sn,若s3,s9,s6成等差数列,求公比q. 等差数列前n项和为Sn,若S1,S2,S3,S4成等比数列,求公比q 设{an}是公比为q的等比数列 Sn是它的前n项和 若{Sn}成等差数列 则q= 设等比数列an的前n项和为Sn,公比为q.1若S4,S12,S8成等差数列设等比数列{an}的前n项和Sn,公比为q(q≠1)(Ⅰ)若S4,S12,S8,成等差数列,求证a10,a18,a14成等差数列（Ⅱ）若SmSkSl成等差数列（m,k,l为互不相等