解题方法
1 . 设
,
,当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
________ 时,
取最大值,最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008b1441b1790bae645227813426d18b.png)
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2 . 已知实数
,
,
满足
,则当
取得最小值时,
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbea56925020ca1438b9bceea7140dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47815a0e7ccb1ea3fd76ea9ccebf33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-11-23更新
|
215次组卷
|
2卷引用:河南省名校大联考2021-2022学年高三上学期期中考试文科数学试题
名校
3 . 已知函数
.
(1)关于x的方程
有解,求实数a的取值范围;
(2)求函数
在区间
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58e1b7af2a0c05c9a79962b61fd6d79.png)
(1)关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cd0964d5ed078f9d94efba4ce35e97.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378c3d729d1d0bf2b2c0ece2da407038.png)
您最近一年使用:0次
2020-11-15更新
|
741次组卷
|
2卷引用:安徽省蚌埠市第一中学2020-2021学年高三上学期期中文科数学试题
名校
4 . 若函数
满足
,则
在
上的最大值为_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d887187e0e6c710ffd279232872389b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acb74208dcbe73fd8cbd89bf86bd69c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fab11f38ab8593932082ec4d9c8c91f.png)
您最近一年使用:0次
名校
5 . 若实数
、
满足
,则
的取值范围为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e60c7e7c5ecf29ae2068bac411c344d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9de58b92dce8895f4628de91e70acfd.png)
您最近一年使用:0次