设数列
的前n项和为
,前n项积为
,若
,则
=___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b90c3f0930d92386d06690f78bcaed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
更新时间:2021-11-06 15:13:05
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【知识点】 求等比数列前n项和
相似题推荐
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|
适中
(0.65)
名校
解题方法
【推荐1】数列
满足
,且数列
的前n项和为
,若实数
满足对于任意
都有
,则
的取值范围是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036d767cc08fa6ab5bed20a33d49d3a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68cb6e080bf75cb2a35ce7e4609e0f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐2】在如图所示的三角形数阵中,用
(
)表示第i行第j个数(
),已知
(
),且当
时,除第i行中的第1个数和第i个数外,每行中的其他各数均等于其“肩膀”上的两个数之和.即
(
).若
,则正整数m的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ba1bbe411bc71bca016d3fd82352f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5f966f78e14418531d9b4cf708e810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a82caca991a9f313f3d17537fb41be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0459b7e165c655d210ca902789b283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de503f70b5fb3ea9e5e0f18eafe5c949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2afd8b154553478bc39b7cc7215aad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac352c7df5cb1906c2c73d1b03878e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cdf824f3bc66f74a71d9a880f383be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a277d754b1932a4de6899e92654987.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/84fdf07a-9d17-4046-ab7a-ccfd7f3cdd3e.png?resizew=229)
您最近一年使用:0次