已知函数
定义域为
,
.
(1)求关于
的不等式
的解集;
(2)若存在两不相等的实数
,使
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/362bfce584209628bc4ad3f23e3d7b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761c38bcca04fdb9b99817635f8e10f3.png)
(1)求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d160351bbd4906644ff0a7ece07595f.png)
(2)若存在两不相等的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0777bb66e22131bcdff0b722b7731cc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c173412f52d1f857bde4116a9a72bb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2022-12-24 22:51:42
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相似题推荐
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】已知函数
在其定义域上为奇函数.
(1)求
的值;
(2)若关于
的不等式
对任意实数
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1007f258d71df70c5dd6046854ca587.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ba746882024f003537742fb6eb04814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132d41feaf28a5d96470d23780262b25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知偶函数
满足:当
时,
,当
时,
.
(1)求
表达式;
(2)若直线
与函数
的图像恰有两个公共点,求实数
的取值范围;
(3)试讨论当实数
满足什么条件时,直线
和函数
的图像恰有
个公共点
,且这
个公共点均匀分布在直线
上.(不要求过程)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27f27cbb8185c1974d715ff95f8801c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/944eb4499433e751dbc1a94e14bba291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1af83405d0098ee50062e0cedc40e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ed2252a174be68cd6b1dbd878f445a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)试讨论当实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e32f28f5c2705d8dc327f383f5108db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4d12362d4b8dd25813953e1c5a94b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810c82dd74bc5c74e137e1247b807b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4d12362d4b8dd25813953e1c5a94b2.png)
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名校
【推荐1】意大利画家列奥纳多·达·芬奇曾提出:固定项链的两端,使其在重力的作用下自然下垂,项链所形成的曲线是什么?这就是著名的“悬链线问题”,后人给出了悬链线的函数表达式
,其中
为悬链线系数,
称为双曲余弦函数,其函数表达式
,相反地,双曲正弦函数的函数表达式为
.
(1)证明:①
;
②
.
(2)求不等式:
的解集.
(3)已知函数
存在三个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65623d246ccde18e941c9bda7011ef65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ff88c570435584c4df32454224c442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0639494fc8cc7a048c7621f972eae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a59c8dc71935b342d42cb4a54eed27.png)
(1)证明:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fec3182982e6dcf905ea35d6b5be5f48.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe43cb3653c29dd797074b27780695a9.png)
(2)求不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf091e70e33483f99554568eb54a10a.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f307ed8ec3f398d3d3e445266396acdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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解题方法
【推荐2】已知定义域为
的函数
是奇函数.
(1)求
、
的值;
(2)判断
的单调性,并用单调性定义证明;
(3)若对任意的
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c1e3c44046aa6f545dbc107d942c0a4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d5cd7784814df5e9e15abe9ec360234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
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较难
(0.4)
解题方法
【推荐1】已知函数
的图象关于原点对称.
(1)求
的值;
(2)若
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297c7cc93ff9cee67ddbdd9422564077.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3993391fe16e7315c4d92af28c03fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f82bc921bbea420e4c526cb489e430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知函数
.
(1)若
是奇函数,求
与
的值;
(2)在(1)的条件下,求不等式
的解集
![](https://img.xkw.com/dksih/QBM/2015/11/26/1572313665830912/1572313671786496/STEM/f647c63f2f7346829609af91330f917c.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2015/11/26/1572313665830912/1572313671786496/STEM/80a4ef7f6e394235b6195f7a522cca10.png)
![](https://img.xkw.com/dksih/QBM/2015/11/26/1572313665830912/1572313671786496/STEM/7cf8458c549349e69c35e19bcc445c67.png)
![](https://img.xkw.com/dksih/QBM/2015/11/26/1572313665830912/1572313671786496/STEM/c5b6587a30de426faa36ccb262592ad0.png)
(2)在(1)的条件下,求不等式
![](https://img.xkw.com/dksih/QBM/2015/11/26/1572313665830912/1572313671786496/STEM/3ba4df094c684816a59fe5f729527aa2.png)
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【推荐3】已知
.
(1)判断函数
的奇偶性,并说明理由;
(2)若实数
满足
,求实数
的取值范围;
(3)若存在实数
,使对任意
,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6cafb3334c0c9e1d911ff8fa829bf5c.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466499e7e0b82533a6869b9f8483d63e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bda099d4ccbffd59338c873b0193e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97148e04ca6a9f9dca0aba91ce4e1d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1014ded132f5bc8bf44b2ddf68db1fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐1】已知函数
,![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/ab78eef8eed14283943bc8dac8db1041.png)
(1)用定义法证明
在
上是增函数;
(2)求出所有满足不等式
的实数
构成的集合;
(3)对任意的实数
,都存在一个实数
,使得
,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/3df7236ea67446178cd036632018522e.png)
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/ab78eef8eed14283943bc8dac8db1041.png)
(1)用定义法证明
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/370ee7de68e944f487248903ea0c4566.png)
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/55d801c7fad549ca8c9aa7fae0f8f7ca.png)
(2)求出所有满足不等式
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/65b4a059bbba4881b1da1197b0edd224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)对任意的实数
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/416ddd1dec894ff1834123322f8b85ed.png)
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/6e0f036099f444bbac5b94cab943d599.png)
![](https://img.xkw.com/dksih/QBM/2016/10/9/1573058426716160/1573058433130496/STEM/9bf822a4970b4af8993f020ec3a856b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知函数
,对于任意的![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058fbc27ee9654d24ebda3d9e6991266.png)
,都有
, 当
时,
,且
.
(1)求
的值;并证明函数
在R上是递减的奇函数.
(2)设函数
,判断函数g(x)最多有几个零点,并求出此时实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/058fbc27ee9654d24ebda3d9e6991266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd384d86840b7b158af41f56fe29c7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0887337b2dd1eeaf6590b8793a720e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc26417df3261088d718f077114276cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3819d11c74180ad9228008ddbb4ecbfe.png)
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