1 . 设
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3de0ebe9379e596a90ef133fc9a9b4.png)
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解题方法
2 . 已知实数
满足约束条件
且不等式
恒成立,则实数
的最小值是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad70a9d94b49d11dbd0c90420f2ba863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182235357f024436ee5fa446d3f7ead7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 用
表示自然数
的所有因数中最大的那个奇数,例如:9的因数有
,
,10的因数有
,
,那么
=__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2851cb9ffb602b4cec7ccd01e35dd95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412c73872a41744bb74eebfba048d664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e18c394cfe2aa1bef6baadf8703e03c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/244cf53f0fcf787c289d0bd22aae75fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d991a3361309a8a006312748b129c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e3ddf574ba81dc32599ba356174c80.png)
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解题方法
4 . 在
中的三个内角
的对边分别为
,重心为
,若
,则
=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b6f99357a60ba45016714dc392980ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b35cfed78d5b147eb5c6d918b5f69ca5.png)
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解题方法
5 . 数列
的项是由1或2构成,且首项为1,在第
个1和第
个1之间有
个2,即数列
为:1,2,1,2,2,2,1,2,2,2,2,2,1,…,记数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec6439c99c6a996a48b7d9e57c21208.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b00f4eb7f1bd2ccefbabf0c1dfa8f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/897d8f6cf00391f1b3ff70432f0121b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec6439c99c6a996a48b7d9e57c21208.png)
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6 . 函数
,若
(其中
均大于2),则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b9b8eedafc6d2633e42e57414bf2c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04562e77fd7d98009b16fe3fbaa71cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d09acdce3deb0bb066dca07aa96198.png)
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7 . 数列
满足
,且对于任意的
都有
,则
等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ea12b5bf919a962f08bed2140d896b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2cbc577c3eb228535f96ceb298a205.png)
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解题方法
8 . 在
中,三个内角
所对的边分别为
;若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b53e0bdac1e1e0c90821e5f8f951afd.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43130355762bb7cbe2bc4db08722449e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b53e0bdac1e1e0c90821e5f8f951afd.png)
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名校
解题方法
9 . 设
表示等差数列
的前
项和,已知
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0675050bc7377c6056b0e62b2570fc1.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/0eabb3e5ff574b8cd7d0bd32d6f5b5f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0675050bc7377c6056b0e62b2570fc1.png)
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2024-03-06更新
|
279次组卷
|
2卷引用:甘肃省白银市会宁县第四中学2015-2016学年高二上学期期末考试数学(理)试题
名校
解题方法
10 . 已知数列
满足
,
,其中
为
的前
项和,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dec6439c99c6a996a48b7d9e57c21208.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d924d13e778b4fcd1e559bda72037f0d.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/dec6439c99c6a996a48b7d9e57c21208.png)
您最近一年使用:0次