设函数
.
(1)求函数
的最大值;
(2)若存在
,使
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18479f012783804689d52210d022c9a7.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c035395e635cb4b7c90f6d54a44ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2019-05-15 11:01:25
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解答题-问答题
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适中
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【推荐1】已知函数
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(1)当
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(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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(2)若关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7855bbdd4464e3994827995359132e48.png)
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适中
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名校
【推荐2】已知函数
.
(1)若不等式
的解集为
,求实数
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(2)若不等式
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,
恒成立,求正实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8327be2dd861aba12773e281c6f3582.png)
(1)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a71334726bd1b710093f0f90535b3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e99bebf8db0d314aacb2cb1f09bf48c.png)
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(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb175b662207ff9070aedaac3335890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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适中
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名校
【推荐3】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f22cb6314be54ab4b82986e1c12068.png)
(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f22cb6314be54ab4b82986e1c12068.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03fc1cd2baabbf8afea25478e1258237.png)
(2)求出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e00e7e519a033c40e7b2a0e0c2beac.png)
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【推荐1】已知
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R
(Ⅰ)当
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(Ⅱ)若
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(Ⅰ)当
![](https://img.xkw.com/dksih/QBM/2013/9/7/1571344502431744/1571344507625472/STEM/bb9bb1cf5c06459eb178c653f8c7ac50.png)
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(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2013/9/7/1571344502431744/1571344507625472/STEM/3ced2ab03a024f7a80b6b5487104c0ad.png)
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适中
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【推荐2】已知函数
.
(1)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d9c61d97927fe35270fb41363cbf8c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b45f8224a638bb503ccb01749cfeb1.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec80634a6e2b2c85f845fa368b3a5969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ba8542fbe02e78cf3948c9abea9855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d095844022a8ed5fefc23b24878d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】已知函数
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(1)解不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0480ef7151f470b55074f698e3c4d992.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a9f7884d2a1a1f304d8d468d8dd47c.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f16e1da1bf4ee14ae69f70f8e6a4cbfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e149d90ca2d5dfd52bf63bc0a4582e3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】选修4-5:不等式选讲
已知函数
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(1)求不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c4a13a6acfb6fee85dd74877a50b6c.png)
(1)求不等式
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(2)若对于任意的实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edea9ec39226a4ea7c3df871949c97ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次