解题方法
1 . 设函数
.
(1)当
时,求不等式
的解集;
(2)当
时,函数
的最小值为
,正实数
满足
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f2ae91c9d052de0199858fdf5ddc49.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0abe4960954bb3144b7e86d4233e747.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f7ff8bc9092ec22c2c0c98eabbefbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca1766911784706d740ccc1276e2c72.png)
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2023-02-03更新
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87次组卷
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2卷引用:河南省三门峡市2022-2023学年高三上学期第一次大练习(期末)数学(文科)试题