设等比数列{An}的公比q=1/2,求S4/A4.
设等比数列{an}的公比q=1/2,前n项和为Sn,则S4/a4=
设等比数列an的公比q=1/2,前n项和为sn,则s4/a4=
设等比数列{an}的公比q=1/2,前n项和为Sn,则S4/a4=?
设等比数列an的公比为q=1/2,前n项和为Sn,则S4/a4=?
设等比数列an的公比q=1/2,前n项和为Sn,则S4/a4
设等比数列an的公比q=2,前n项和为Sn,则S4/a4=
设等差数列{an}的公比q=1/2,前n项和为Sn,则S4/a4=
设等比数列{an}的公比q=2,前n项和为Sn,S4\a2
设等比数列An的公比q=2,前n项和为Sn,则S4/A2等于
已知等比数列{an}中,公比q属于(0,1),a2+a4=5/4,a1a5=1/4,设bn=1/2nan.求an的通项公
设等比数列{an}的公比q=2,前n项和为Sn,则S4/a2等于
设等比数列{an}的公比q=2,前n项和为Sn,则S4/a2=?