设等差数列an的前n项和为Sn,则S4,S8-S4S12-S8,S16-S12成 发布时间:2017-04-30 21:33 │ 来源:www.tikuol.com 题型:解答题 问题: 设等差数列an的前n项和 为Sn,则S4,S8-S4S12-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.
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