解题方法
1 . 记的内角
所对的边分别为
,已知
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199bf5907aefa48ab7bea6db59fdc5cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
解题方法
2 . 已知函数
是定义在
上的奇函数,若
,且
,都有
成立,则不等式
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd98252dccf276ce69d57a9cbc05415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2958030ec9d7543dda1f529593a915e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41d70b03d2f614a31ea28d1b49456cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae6b59fd1c273e4f53d84e725003604.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3卷引用:浙江省温州市浙南名校联盟2023-2024学年高一下学期寒假返校联考数学试题
3 . 若关于
的方程
的整数根有且仅有两个,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e63550f448d55ec10d2754d3a6f54ec4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 在
展开式中,
的奇数次幂的项的系数和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365f71472344a4935ab23b01c0cf0fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.64 | C.![]() | D.32 |
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4卷引用:浙江省温州市2024届高三第二次适应性考试数学试题
浙江省温州市2024届高三第二次适应性考试数学试题(已下线)高二 模块3 专题1 第3套 小题进阶提升练江苏省无锡市锡东高级中学2024届高三下学期4月月考数学试题(已下线)高二 模块3 专题1 第3套 小题进阶提升练(苏教版)
名校
解题方法
5 . 红旗淀粉厂2024年之前只生产食品淀粉,下表为年投入资金
(万元)与年收益
(万元)的8组数据:
(1)用
模拟生产食品淀粉年收益
与年投入资金
的关系,求出回归方程;
(2)为响应国家“加快调整产业结构”的号召,该企业又自主研发出一种药用淀粉,预计其收益为投入的
.2024年该企业计划投入200万元用于生产两种淀粉,求年收益的最大值.(精确到0.1万元)
附:①回归直线
中斜率和截距的最小二乘估计公式分别为:
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ae2ff5db33b7bd19c60ab2eb6e2b6a.png)
②
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![]() | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 |
![]() | 12.8 | 16.5 | 19 | 20.9 | 21.5 | 21.9 | 23 | 25.4 |
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462bafa57981befbea871147abffeddf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)为响应国家“加快调整产业结构”的号召,该企业又自主研发出一种药用淀粉,预计其收益为投入的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28555fa2f3a09261cb4e0305d390145.png)
附:①回归直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13557a1ebb8388eb2a9bb7ca9f0678b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5478b75ddd942ffcac4212ebe6642336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6ae2ff5db33b7bd19c60ab2eb6e2b6a.png)
②
![]() | ![]() | ![]() | ![]() | ![]() |
161 | 29 | 20400 | 109 | 603 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d46e43b31bf74c8adc17301f50940b.png)
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3卷引用:浙江省温州市2024届高三第二次适应性考试数学试题
名校
解题方法
6 . 数列
满足:
是等比数列,
,且
.
(1)求
;
(2)求集合
中所有元素的和;
(3)对数列
,若存在互不相等的正整数
,使得
也是数列
中的项,则称数列
是“和稳定数列”.试分别判断数列
是否是“和稳定数列”.若是,求出所有
的值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4b7a84d1c2089430f5adbf0f52731e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2788ae6bae8e954fb96b9a3393adc19.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a55e03428497ac0ea2aa80fe5bdcd939.png)
(2)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb0582b0e415def42abf1d0a567dccb.png)
(3)对数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f04755f109e1dc24e89113809280ece.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932441c3185a1e55e2dfda8ba7f1e419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e567d7e9761951a266953c8d5042ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
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5卷引用:浙江省温州市2024届高三第二次适应性考试数学试题
浙江省温州市2024届高三第二次适应性考试数学试题黑龙江省双鸭山市第一中学2023-2024学年高二下学期4月月考数学试题(已下线)第一套 艺体生新高考全真模拟 (二模重组卷1)湖北省黄冈市文海大联考2024届高三下学期临门一卷(三模)数学试题(已下线)专题07 数列通项公式与数列求和--高二期末考点大串讲(人教B版2019选择性必修第三册)
名校
解题方法
7 . 已知
,则
的大小关系是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7fe9425bc2a1c57d380ac88f4135e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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13卷引用:浙江省温州市2024届高三第二次适应性考试数学试题
浙江省温州市2024届高三第二次适应性考试数学试题(已下线)高二 模块3 专题2 小题入门夯实练四川省绵阳市三台中学校2024届高三下学期第三学月(4月)月考理科数学试题(已下线)高二 模块3 专题1 第2套 小题入门夯实练(苏教版)(已下线)数学(新高考卷01,新题型结构)(已下线)数学(全国卷文科03)(已下线)数学(全国卷理科02)湖南省衡阳市衡阳县第一中学2023-2024学年高一下学期4月期中考试数学试题河北省名校联盟2024届高三下学期4月第二次联考数学试题 四川省峨眉市第二中学校2024届高三适应性考试暨押题数学(理)试题宁夏银川市第二中学2023-2024学年高三下学期适应性考试数学(理科)试题黑龙江省哈尔滨市第二十四中学校2024届高三下学期第三次模拟测试数学试题陕西省安康市高新中学2024届高三模拟考试最后一卷文科数学试题
解题方法
8 . 如图,对于曲线
,存在圆
满足如下条件:
①圆
与曲线
有公共点
,且圆心在曲线
凹的一侧;
②圆
与曲线
在点
处有相同的切线;
③曲线
的导函数在点
处的导数(即曲线
的二阶导数)等于圆
在点
处的二阶导数(已知圆
在点
处的二阶导数等于
);
则称圆
为曲线
在
点处的曲率圆,其半径
称为曲率半径.
(1)求抛物线
在原点的曲率圆的方程;
(2)求曲线
的曲率半径的最小值;
(3)若曲线
在
和
处有相同的曲率半径,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
②圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
③曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80999542b0b1e42a23e95363667399a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92637a7e7dab461f173112dfc8fa7390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98b40504aef42ec81163e9581efbd83b.png)
则称圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
(2)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f42b2a9736c8943106472a7398d2892.png)
(3)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eae1b87c23b45ce5e5e74d5b1d73234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c3c0b12482cc93dee05fbf69350cd99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f455ecf39764829b0bfe0a8675f1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cbd8e10a553d5607bb8906b2cf64aaf.png)
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解题方法
9 . 如图,在等腰梯形
中,
,点
是
的中点.现将
沿
翻折到
,将
沿
翻折到
,使得二面角
等于
,
等于
,则直线
与平面
所成角的余弦值等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442866160751e8ad0b35f7b4f8fd2f50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e742966e3711cfa53dce04022acf4bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438bf2134641f9950932bd667188d63c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076a727f8e502e1df37fd6beb0776cec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8267d832508d4bee00ff2d4a4bd2b6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545473efd2bfb38f991dceba1b9fb1dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e663220a66eff19da6a71e46b397db2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45439da4f9dd57d7e58c8a52fcbac57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/459b460f-357b-4b54-96ad-de6805496f3e.png?resizew=296)
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10 . 已知等差数列
的前
项和为
,公差为
,且
单调递增.若
,则
( )
![](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/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ba808c24aeae6a2f34b98ae5ec04ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b521653edb53a8480b0b6a3b64f9bb5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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