解题方法
1 . 已知函数
,其中
.
(1)
时,求函数
的单调增区间;
(2)已知存在三个不相等的实数
,使得
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/904b7632f6b685dda191f592ffae5d16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知存在三个不相等的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ba63ad02b1d5af2982fac3d91eb15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55be3775954554217620ce0eb58bda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da3d933c0633f58a2268e692d888faf5.png)
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2 . 已知函数
,
,其中
,
.
(1)求函数
在
上的最小值;
(2)若函数
恰好存在三个零点
,且
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96a72eeeef8313692965bf5ddae91407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a56807f295dc1a2c56a2cb2fb70dc42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499a8449e8bb253065463c23f3ff5860.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471dc6e2e709d2d045ea82afac8c8da3.png)
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解题方法
3 . 设
,
,函数
.
(1)求不等式
的解集;
(2)若
在
上的最大值为
,求
的取值范围;
(3)当
时,对任意的正实数
,
,不等式
恒成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2a1a2c7a6e7d5c91db7488bc019195d.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b99d9d6a6d6f049db4e37f2070747db.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6ce02259a85ea191541f4a708738f1.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe458dacd95f24540bdaaa5e5506a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5358578eb1f0091bcaca8fd6653ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 已知函数
的最小值为
.
(1)求
的解析式;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbf298b0214255bb0a1f879cafd2b42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0a231d50a19c87dbf3f1d7210a3799.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d0a231d50a19c87dbf3f1d7210a3799.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48b0d8a128996477ad48d8611c5ddf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-04-18更新
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3卷引用:湖南省湖湘教育三新探索协作体2022-2023学年高一下学期4月期中联考数学试题
名校
解题方法
5 . 已知
、
,记
,函数
.
(1)写出
的解析式,并求出
的最小值;
(2)若函数
在
上是单调函数,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/478e75f2162f25b93d4c337e2829fc05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a0baa70777b8a14ce84a28a8ff5e1c.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e62a845558f5ce503501acaa2ba2d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68aeaab00b18ca6dbddfa93167c4d73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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3卷引用:浙江省浙大附中玉泉校区2022-2023学年高二下学期期中数学试题
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6 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03d4fd9d26992f3569b43a3a68bbcea.png)
在
上为奇函数,
,
.
(1)求实数
的值并指出函数
的单调性(单调性不需要证明);
(2)设存在
,使
成立,求出
所在的集合
;
(3)请问是否存在
的值,使
最小值为
,若存在,求出
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03d4fd9d26992f3569b43a3a68bbcea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854c384242ea1b47496df067cc782521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb63478132d4c1fef3c17e591919da83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebd84a77eb6fb88506b1d80416a0194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)请问是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39b4511aee0571fe27c8a6b04a5eae68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459c84c9addfbd1cdd0a877ba7c584e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-03-28更新
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2卷引用:广东省揭阳市三校2022-2023学年高一下学期4月期中联考数学试题
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7 . 设函数
且
是奇函数.
(1)已知
,求常数
的值.
(2)在(1)条件下,函数
在区间
有两个零点,求实数
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe6b63c33e1aba322acba44d83b0cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42bb28003d53334358dddcbb449ba0b9.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e273784487d908f05bfba0d705a67d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d8b3614b11f1fa9b00c1731667a60b.png)
(2)在(1)条件下,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1b6a97182bf7e313389bd039241974.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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8 . 一年之计在于春,春天正是播种的好季节.小林的爷爷对自己的一块正方形菜园做了一些计划.如图,
是边长为
米的正方形菜园,扇形
区域计划种植花生,矩形
区域计划种植蔬菜,其余区域计划种植西瓜.
分别在
上,
在弧
上,
米,设矩形
的面积为
(单位:平方米).
,请写出
(单位:平方米)关于
的函数关系式;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f959e5f8d89390f0f136f6acc9f6fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613d648ab11bb6336d31fa508fd7515b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfbd83edd3c4f631662afc2b3d3e05e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613d648ab11bb6336d31fa508fd7515b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e786008371d7ab37d1c782bf5754f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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广东省佛山市荣山中学2022-2023学年高一下学期期中数学试题(已下线)模块一 专题5 三角恒等变换【讲】人教B版重庆市部分学校2022-2023学年高一下学期3月大联考数学试题(已下线)模块一 专题4 三角恒等变换3(北师大版)上海市青浦高级中学2023届高三下学期5月质量检测数学试题(已下线)模块一 专题2 三角恒等变换2(苏教版)河南省焦作市博爱县第一中学2022-2023学年高一下学期期末数学试题(已下线)模块四 专题6 大题分类练(三角函数)基础夯实练(人教A)期末终极研习室(已下线)模块一 专题5三角恒等变换2(人教A版)期末终极研习室
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9 . 对于定义在D上的函数
,如果存在实数
,使得
,那么称
是函数
的一个不动点.已知函数
.
(1)若
,求
的不动点;
(2)若函数
恰有两个不动点
,
,且
,求正数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f66a2b3d90f0d935d6c8ebaf675349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbebfba4d61964c35ff1f9067d7a2dac.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
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2023-03-25更新
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名校
10 . 已知函数
,
.
(1)若函数
在区间
上存在零点,求实数
的取值范围;
(2)若对任意的
,总存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939b11c9a275adcd01cdf818d11b5cc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a122beff1ce00a9c0d063a942bdff7e.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0f995ae0e693cf0fe631fd960014bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f6000513da6cc14ae062653e4baebb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de5186fee115047cf3717d4f1c583aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e63bbadc6250f7139836ede33205550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2023-03-20更新
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