已知等比数列
满足
,
,则公比![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e9d3644920a6654c41de61b7f3636d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51edb7027369b194443909607470afec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad0d99fef1aa4dbcc6dc7b30b7d2c9a9.png)
更新时间:2019-11-06 23:05:49
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【知识点】 等比数列通项公式的基本量计算
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【推荐1】已知数列
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为其前
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【推荐2】《九章算术》中有一题:今有牛、马、羊食人苗,苗主责之粟五斗,羊主曰:“我羊食半马,”马主曰:“我马食半牛”,今欲衰偿之,问各出几何?其意为:今有牛、马、羊吃了别人的禾苗,苗主人要求赔偿五斗粟,羊主人说:“我羊所吃的禾苗只有马的一半.”马主人说:“我马所吃的禾苗只有牛的一半”;现打算按此比例偿还,问牛的主人应赔偿__________ 斗粟,羊主人应偿还__________ 斗粟.
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