设等差数列{an}的前n项和为Sn,则S4,S8-S4,S12-S8,S16-S 发布时间:2017-05-01 04:54 │ 来源:www.tikuol.com 题型:填空题 问题: 设等差数列{an}的前n项和为Sn,则S4,S8-S4,S12-S8,S16-S12成等差数列.类比以上结论有:设等比数列{bn}的前n项积为Tn,则T4,______,______,T16T12成等比数列.