等比数列习题等比数列{an}的前n项和为Sn,若S3,S9,S6成等差数列,求此数列的公比.

等比数列{an}的前n项和为sn,若S3,S9,S6成等差数列,求此数列的公差, 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. 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 已知Sn是等比数列{an}的前n项和,设公比为q,且S3,S9,S6成等差数列. 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.（1）求q3的值 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＝ 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. 设等比数列{an}的前n项和为sn,若S6,S9,S3成等差数列,问2S3,S6,S12-S6S能否成等比数列?请说明理 设Sn是等比数列的前n项和,若S3,S9,S6成等差数列,这an的公比q为多少 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,给出下列结论：①a3,a9,a6成等差数列 设Sn是等比数列{an}的前n项和，S3，S9，S6成等差数列． 已知Sn是等比数列{An}的前N项和,S3,S9,S6成等差数列,则