1 . 用三段论证明:函数
在
内是减函数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d06323ddc3671f968eed950bf2399e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c5e5876943d6e450e77eeaa3d4a5df.png)
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名校
2 . 设
,
(其中
,且
)
(1)请将
用
,
来表示;
(2)如果(1)中获得了一个结论,请你推测能否将其推广
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fe9bc97fbc6a75a48af5a24ba83864.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147ab457bf192df33d4e805896d52662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
(1)请将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b9d91587768894c6109a247ef8ac61d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78e9c61305d138edd16842dc1186575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d49acd9b9ac449301bb7c200c23cbb.png)
(2)如果(1)中获得了一个结论,请你推测能否将其推广
您最近一年使用:0次
9-10高二下·福建宁德·期末
名校
3 . 设数列
的前
项和为
,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f65494ede0159b0b9bd56c03da6ebeb.png)
.
(1)求
,
,
,
的值并写出其通项公式;
(2)用三段论证明数列
是等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f65494ede0159b0b9bd56c03da6ebeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede6f4c2ce7e1d2706a7d8598182087d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
(2)用三段论证明数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
您最近一年使用:0次
2016-11-30更新
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599次组卷
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7卷引用:2013-2014学年重庆市合川太和中学高二下期期中考试文科数学试卷
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