等比数列(An)中,An大于0,公比不等于1,S3.S9.S6成等差数列,则公比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.
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=
设Sn是等比数列{an}的前n项和,S3,S9,S6成等差数列,则公比q=______.
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q3的值是( )
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
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.
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,
以知数列{An}是等比数列.公比Q不等于1,Sn是其前n项和,a1,a7,a4成等差数列.求证2S3,S6,S12-S6
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