等比数列{An}中,前n项和为Sn,若S3=7,S6=63,则公比q的值为?
等比数列{An}中,前n项和为Sn,若S3=7,S6=63,则公比q的值为?
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=( )
已知等比数列{an}的前n项和为Sn,S3=3,S6=27,则此等比数列的公比q等于 求详细过程 谢谢
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=
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( )
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}的前n项和为sn,若s3+s6=2s9,则数列的公比为______.
设等比数列an的前n项的和为Sn,若S6/S3=3,则S9/S6=
1.设等比数列{an}的前n项和为Sn,若S6/S3=3,则S9/S6=?
若Sn是公比为q的等比数列{an}的前n项和,且S4,S6,S5成等差数列,则公比q=______.