解题方法
1 . 已知函数
.
(Ⅰ)当
时,求函数
的最小值;
(Ⅱ)若存在
,使得不等式
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fefce31d3f72c902ef8d2ae4b74ba7f7.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047056c99b39c70fa40d3c8178e5b631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdaffa9c15517afe6d7ba6488f88f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2021-05-12更新
|
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3卷引用:吉林省双辽市一中、长岭县一中、大安市一中、通榆县一中2021-2022学年高三上学期摸底联考数学(理)试题
名校
2 . 已知函数
.
(1)求
的解集;
(2)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72157c1977b28de95ae5d0f7f7e09f55.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369100ccd44feaa77e5f119ea949a879.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10326bb0a5b7ba71695f54e242fbeda3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
2020-07-21更新
|
1068次组卷
|
7卷引用:吉林省林实验中学2021-2022学年高三上学期开学测试数学(文)试题
名校
解题方法
3 . 已知函数
.
(1)记函数
,求函数
的最小值;
(2)记不等式
的解集为
,若
时,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a1551eabdbfb3d6f089b24fa651bfe.png)
(1)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/296be4cb9523510e3ba51e3c782c17ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)记不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b61adc4745f283e4072ddd762f92ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a2b85186925658e66d8541a5645269e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1782dd8e25ae33ded6e0741a248c404c.png)
您最近一年使用:0次
名校
解题方法
4 . 已知函数
,其中
.
(1)当
时,解不等式
;
(2)若
且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46dc0ffb5ecd316c278ac10c4d80f8b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74dbd58b21a94cf93f4623c07452b102.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c109fcfbe451ba38bbf0a3379364823f.png)
您最近一年使用:0次
2017-09-01更新
|
392次组卷
|
4卷引用:2020届吉林省东北师范大学附属中学高三下学期开学验收测试数学(理)试题