设函数
.
(1)解不等式
;
(2)若
对
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c769b81572c9d17f1be7c5843933d3.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d24227741bf427e6bd73490baf3c3d6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bfa59e29befe2bc19882221e13849e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-03-20 17:20:10
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【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21fa4e29680abc2eab221f634cde157b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af908bca1b10f5de7e2d8979989c806.png)
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(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c36c3781d5caf82f3749cd503d23ad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa3ef23476e48319093f5e5163f93a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8a96195e78425225a5535d7286f9fe.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11a069688e4c797fcf527eab15afa82.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564632a83a6b49a61896f13d7e685039.png)
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