有
个正数,排成
行
列的数表:
,
其中
表示位于第
行,第
列的数.数表中每一行的数成等差数列,每一列的数成等比数列,并且所有公比相等.已知
.
(1)求公比.
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d671caaff548d37ec31ed8f16f21dece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/401154e38414d767b2bdfed4cad5bcd5.png)
其中
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a14c188b1c9d61aa237b137ba18023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e365b6e559d80d74c82141e3beef149.png)
(1)求公比.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cedbc05832a699fb919e968a6cc3141.png)
更新时间:2024-02-20 23:34:48
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【推荐1】已知数列
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【推荐2】已知等差数列
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【推荐1】已知正项等比数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
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(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93256727724b7f18803bb3235b631f2b.png)
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解题方法
【推荐2】已知正项等比数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09446528b12dd384c6828e1ef1c70e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4e07658af8217548960745f37e6d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c5c2d777efa6bd6e832b5755f8e436.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e169fdbb4882cba8d1cf544b700e4c.png)
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【推荐2】已知数列
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【推荐1】已知数列
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/804880064514261ff3581c85307b63ee.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c2a5f8ec179b72b201c3c0a670612a.png)
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解答题-问答题
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适中
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解题方法
【推荐2】已知数列
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