名校
解题方法
1 . 若数列
满足:
,则数列
的前
项和
为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0710ac68ddb169a245eec27982ab4d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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名校
解题方法
2 . 已知定义在
上的偶函数
在
上为减函数,且
,则实数
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/264242feb14659ecc1cd992333edf8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2020-02-15更新
|
395次组卷
|
2卷引用:重庆市第八中学2019-2020学年高一上学期期末模拟卷(三)数学试题
名校
3 . 在
中,已知
,给出以下四个论断:
①
,②
,③
,④
,其中正确的是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ee26622a95ee0b12c1367595cc69b2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a1fa497e43c5b7cb47b1c12bc84780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df8ae173df74bb104b1bc3e12d9988c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7f8b210e25b21581f4e7f248ce420d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ef6ad524b708679ae2ba6484bc9b52.png)
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4 . 在等差数列
中,
,
,则前
项和为
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ae16720511620cd8cbb904f9f6be6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f01828ef9f7dec29057350e75a6fe4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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5 . 若
是
与
的等比中项,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20ee3ee0346fb53900408ebd18432b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0d2b7d558996d2e2a2ed1ce3011d7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b255ea002f16254e3ba834bd485e130b.png)
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6 . △ABC的三内角A,B,C的对边分别为
,且
,设
,
,又△ABC的面积为S,则
与
的关系为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49831fc3ba1db10bcc59d4f9e0298ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052294b7e1874d0f660d8a6ea51123d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29febe61bba33f0a4263b7634d15878c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb74ca8fc86ddef279e33f31c1fedda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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7 . 已知数列3,33,333,3333,…则通项![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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2020-02-14更新
|
298次组卷
|
3卷引用:重庆市江津第六中学2018-2019学年高一下学期期中数学试题
名校
解题方法
8 . 已知等比数列
满足:
,
是
与
的等差中项,且
不是常数列.记
是数列
的前
项和,若当
时,
取得最小值,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5383c68b875f1647217e7893d36eeed3.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039e4fe671d61e59b96ee525c9df43e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97118aa23232072e4c49f612d6905d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b2667a6c91b720ca9b42d092c776cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.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/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ca4f2b82d9d7a8323c8d697338a6a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/321189c4c80eac29fd3eaacbca7df051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5383c68b875f1647217e7893d36eeed3.png)
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名校
解题方法
9 . 已知函数
(
且
)的最大值为
,最小值为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60a37b623713dc322469d73356765708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed83485b04357536c07c06cdd74f149.png)
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10 . 已知
分别是方程
和
的解,则
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbbf02f7e508ccb3e870ba8607d1c295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d6ddebfbb7e7617f3928dfd592ed0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0af4c784b525029df5ee481e9063078c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6252eaa487cfc5daa01030e6803d7076.png)
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