已知函数
.
(1)若
,求
的取值范围;
(2)若
,对
,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e70b6f649d2a372dfa3704747d22b35.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22cf78fac08ce11334966ac7f074d1ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceb187c048176d6cc7d07cf753b4cd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4bd9994375a698682ae613b2d1fdc2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
11-12高三上·河北衡水·期中 查看更多[5]
更新时间:2019-05-28 19:35:25
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(1)当m=-1时,求不等式f(x)
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【推荐2】已知
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0d7fbcc396c7b646c31f60e32d9e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3a075dce77c9a6b964a8a3fc1ee6e8c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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较易
(0.85)
解题方法
【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3307ce1fb03800e7265000a13c99a6.png)
(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3307ce1fb03800e7265000a13c99a6.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/736d35fb5b436cd822304eb8efdcefd3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62067438801d8aee7dfbd4d55e81dae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff926267e8cfd35e2a3fdd9b9bf1486.png)
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【推荐2】已知函数
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(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28280ea1a2aabb7f4d1f7fa6f44a7e8a.png)
(2)若函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f545a87bd651b061768225748b78c82.png)
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【推荐3】已知函数
.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/567abc7019121c7001a4c696cf2d308c.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cc25a7cf28ed096549fbae97fce40a.png)
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