已知函数
,且
单调递增区间是
.
(1)若
对任意实数
都成立,求a,b的值.
(2)若
在区间
上有最小值
,求实数b的值.
(3)若
,对任意的
,
,总有
,求实数b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc19f86c79267e8947ee375a5b75c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735feb662d7a1ac795dea4d9ed9f3314.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b9e5717be98f70b11e8d712d3e6d396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be381da62d4a042476aa11dbd5824e8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ebf7dd44e24f45150d01af41948e761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2d784197a8529a4bee69a4bc68d427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17601dc69e302d2b0a4882829c4f2b5.png)
更新时间:2023-01-05 13:33:51
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解题方法
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c69b346c6d6d8172c0ed9ce6ee910dc.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226c1cb98a010cbd20fc2f84d2573762.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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