解题方法
1 . 对于数列
,定义
为
的“优值”,现已知某数列
的“优值”
,记数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4b5a382f920203b9ef307224ae641e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9682bbf19fb74219f2c6266bd35f5ff.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/466a22f3320bb2340bab262cab2d713e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cfb8091a44e1edbc4dc5274a57cbd0b.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/4e4b5a382f920203b9ef307224ae641e.png)
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名校
解题方法
2 . 记
的内角
的对边分别为
,已知
.
(1)
;
(2)若
,
,求
的面积.
![](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/4666b737a55e5d514a97ebd0f805bdd5.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c67a4a0668afd0a1988d323f6cd0915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-03-01更新
|
1445次组卷
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5卷引用:甘肃省酒泉市敦煌中学2023-2024学年高一下学期3月月考数学试卷
甘肃省酒泉市敦煌中学2023-2024学年高一下学期3月月考数学试卷贵州省贵阳市第一中学2024届高三下学期一模考试数学试题(已下线)第七套 艺体生新高考全真模拟 (一模重组卷)新疆维吾尔自治区伊犁哈萨克自治州霍尔果斯市苏港中学2023-2024学年高一下学期4月月考数学试题(已下线)第9章:解三角形章末重点题型复习-【帮课堂】(人教B版2019必修第四册)
解题方法
3 . 已知点
,
是函数
图象上的任意两点,
,且当
时,
的最小值为
.
(1)求
的解析式;
(2)当
时,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d7d0c0139bcc27862018d6734a0961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e61c9a7ed0961f8977a21dab37aab396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca864ff1b61210bf34305c96eddd34e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6abf3f9b0ebcdc47a028c781b7edb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478065c52e8b9515bfad8dc0e0a4f734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46fd2282439c5fc307aa9c719b0d4fa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2024-01-09更新
|
1067次组卷
|
5卷引用:甘肃省酒泉市2023-2024学年高一上学期期末数学试题
甘肃省酒泉市2023-2024学年高一上学期期末数学试题甘肃省酒泉市2023-2024学年高一上学期1月期末数学试题福建省泉州市实验中学2024届高三上学期1月考试数学试题(已下线)专题05 三角函数3-2024年高一数学寒假作业单元合订本(已下线)热点3-2 三角函数的图象与性质(10题型+满分技巧+限时检测)-2
名校
4 . 在等比数列
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8bc530951a879c9951eebe2656afce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd30e4e6e0b04b6a6c5e3fb772243f8.png)
A.8 | B.6 | C.4 | D.2 |
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2023-12-01更新
|
763次组卷
|
3卷引用:甘肃省酒泉市四校联考期中2023-2024学年高二上学期期中数学试题
名校
解题方法
5 . 已知数列
是等差数列,
,记
为数列
的前
项和,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3309d92db3265d0b74b46fa37cfa4.png)
(1)求数列
的通项公式;
(2)若
,求
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b38f54801d6b1be3e440d5d908225c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.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/19f3309d92db3265d0b74b46fa37cfa4.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db0cd24a55fc6ec1923631ef249995a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2023-11-27更新
|
1094次组卷
|
4卷引用:甘肃省酒泉市2023-2024学年高二上学期期末数学试题
6 . 若a,b,
,则下列命题中为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f306d2b261f4c39a9fc0858d96e647.png)
A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
7 . 已知函数
,且
的解集为
.
(1)求a,b的值;
(2)当
时,求
的最小值及取得最小值时x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a83ab22b0c36cd8c26e061db720eb46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
(1)求a,b的值;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ada0af2a1673f6182f7e70b257a999.png)
您最近一年使用:0次
8 . 已知
.
(1)求
,
;
(2)若
,求a的值;
(3)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a4f9888a3b85a8125768949ac0e855.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a32822a106d217ffdec43557a236f786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa16aea6803864cc915c63e8ee9936c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04042cd29185f7f48399495d7df371e.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
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9 . 不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82210ed8b49488c807fb0cbc19aac60f.png)
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解题方法
10 . 若
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f8ba560b4cb459db3a0fdf333446c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c6cff9c0f64a59c758c252f551497a.png)
A.![]() | B.4 | C.8 | D.16 |
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