若对任意实数
,恒有
成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9d75fe8e4daa9d50656caf4c4bd33ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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23-24高三上·浙江绍兴·期末 查看更多[2]
浙江省绍兴市柯桥区2024届高三上学期期末教学质量调测数学试题(已下线)专题07 函数的极值和最值的应用8种常考题型归类【好题汇编】-备战2023-2024学年高二数学下学期期末真题分类汇编(北师大版2019选择性必修第二册)
更新时间:2024-03-03 18:42:46
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【推荐1】已知函数
,
,
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c61fb8aa78f58a78fefbf3470587cce3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f832d9cca2d5c9d76d38374e2a258d9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知定义在
上的函数
满足:①对任意的
,
,
;②当
时,
;③
.若对于任意的两个正实数
,
,不等式
恒成立,则实数
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa078bf063c53e4cd50579363c8c7927.png)
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【推荐2】若函数
与
满足:存在实数t,使得
,则称函数
为
的“友导”函数.已知函数
为函数
的“友导”函数,则k的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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