已知函数
.
(1)讨论函数
的单调性;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80e86d369cb8d2b5506d71113c2f177.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875afd22d89b4e0b1bfc8ffaeaec9981.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
23-24高二下·辽宁·期中 查看更多[2]
更新时间:2024-06-02 23:00:31
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解答题-问答题
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适中
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【推荐1】已知函数
.
(1)讨论函数
的单调性;
(2)设
为两个不等的正数,且
(
),若不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d0bbe1dac48f84c697ceff6e616d17.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8e9f49a0c2862c0672ff6e12454be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e57a08b9a8d40e7806712ead46c2101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0375346bf4afe4c7fbf029fdfdafefc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/618142b9114b01ef2f8c5064c4cea30c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0956494d5a4ae5633b3279494718fdc.png)
.
(1)当
时,求
的单调增区间;
(2)当
时,求证:
在
上是增函数;
(3)求证:当
时,对任意
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0956494d5a4ae5633b3279494718fdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88771dd366d7df190e3863b442f055b7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aed39f5aca78934fb383402433fe549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434e938638cced59180fb39abbf78b95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5d47099e41dc045b95b4de6cd8bf3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
(3)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/232961f0b0cbe58baf7522762876dfbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c164755dc2d7cff80fb4c9cffc9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c4a744f19c98d4aedd9604a55b42e9.png)
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解题方法
【推荐1】已知函数
.求函数
在区间
上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902063e269970661db1fca22119cd0ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
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解题方法
【推荐2】已知
是自然对数的底数,函数
,
.
(1)若曲线
在点
处的切线斜率为
,求
的最小值;
(2)若当
时,
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72bcb3f2603c4e7085b9f041904a9333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b4d2cdbc9e45cbc12c47747e6f5314.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b4d2cdbc9e45cbc12c47747e6f5314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cf3a56148e3293ec46b24d004dff5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐3】某广场一雕塑造型结构如图所示,最上层是一呈水平状态的圆环,其半径为
,通过金属杆
,
,
,
支撑在地面
处(
垂直于水平面),
,
,
是圆环上的三等分点,圆环所在的水平面距地面
属杆
,
,
所在直线与圆环所在水平面所成的角都为
.(圆环及金属杆均不计粗细)
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710163069018112/2798947815768064/STEM/21808899dc1041548d9a25a6be5d21c5.png?resizew=156)
(1)当
的正弦值为多少时,金属杆
,
,
,
的总长最短?
(2)为美观与安全,在圆环上设置
,
,…,
个等分点,并仍按上面方法连接,若还要求金属杆
,
,
,…,
的总长最短,对比(1)中
点位置,此时
点将会上移还是下移,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71a41641aa0d0e45a3c03d3d2c1196b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae3a47e231dcbb00667109b40722bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287d8edca8efb868f5233c19e2e9edb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167e6e41ac221847824a72e964f340f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae3a47e231dcbb00667109b40722bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287d8edca8efb868f5233c19e2e9edb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://img.xkw.com/dksih/QBM/2021/4/29/2710163069018112/2798947815768064/STEM/21808899dc1041548d9a25a6be5d21c5.png?resizew=156)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae3a47e231dcbb00667109b40722bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287d8edca8efb868f5233c19e2e9edb0.png)
(2)为美观与安全,在圆环上设置
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1093302106aaafb7e197d06fefd01125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae3a47e231dcbb00667109b40722bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5079f6411c584d0601ab83ca8dea00d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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适中
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【推荐1】已知函数
.
(1)当
时,讨论
的导函数
的单调性;
(2)当
时,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9e1dde80a911e55b638fb8068b7b0c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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(0.65)
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解题方法
【推荐2】已知函数
.
(1)若
在其定义域内不是单调函数,求实数
的取值范围;
(2)若函数
存在两个极值点
,
,且
,设
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5124251b521fb2525f55b99ee9ff6f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d3c8eed379160ecbe9a170a27683b9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐3】已知
,
.
(1)求函数
的单调区间;
(2)若
,对
,
都有
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4625b7218e136a29e0f2a54cb6cfb131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b98572b929794f7dc7fd3a978d631a6f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecba251c44691a82cbcfbe302fc1251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673207f6b77b8192d25463d071737b7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c618c5b15a80c95435eac366d58cbde6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333d64bb394ff3b2d2baaed8542af1ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】已知函数
,
,
,讨论函数
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dea6d08eed01ec1677ef68c41124812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
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适中
(0.65)
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【推荐2】已知函数
.
(1)若
,求函数
的极大值和极小值;
(2)求函数
的单调区间;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0781a874b9600df71279ea45ed7edd88.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次