已知函数
,
.
(1)讨论函数
的单调性;
(2)设函数
,若
在
上为增函数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff6838d84b68c6f0d3b93b196d9b08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976581d4a974fe50f9f29d430c1289f2.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b6e9fdaca91ee49de1121a6127273b.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab84b2d4b55e6cfe246eef3cc5b03bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e593828316139a54019e352dec883f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1819012c2e847af0a22f78d7a0ee9c19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2022-03-21 21:37:03
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【推荐1】记锐角△ABC的内角A,B,C的对边分别为a,b,c,已知
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(2)若AD是BC边上的高,且
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(1)证明:
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(2)若AD是BC边上的高,且
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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【推荐2】已知函数
.
(1)讨论函数
的单调性;
(2)若对任意的
不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0308bf45d7893b66fd25e322835cb4d5.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2883ccc2634ed2d7e1ef6c9ac531a56c.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69303621c56f67b4ec4e0ac575deb554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/256f3981024e53f373a80aad40e994ae.png)
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【推荐3】已知函数
,
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(1)当
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(2)若
在其定义域内为增函数,求实数a的取值范围;
(3)设函数
,当
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,对任意的
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133bb541dbb30d83cd28f5c8f0dcec76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e678ba3a3cbdb9cb56ff1f2fc459efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857ef93ef33c8ac31901dfe9f2d03426.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2251dc81292a17b6e6bf8a4beefd06af.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174426520dc1b3bbc366bca4deaa664.png)
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【推荐1】已知
.
(1)若函数
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa91ecd631c9098396b89ae6ae66a75.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55c9f1a79c0594ee6ade90d9718aeaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐2】函数
.
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(1)若函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc30165c18de623d0a3efb961e606d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a061d02af962a2d4083eca7416f519a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895e181cd8261c598f3261e657c28291.png)
(1)若函数
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上为增函数,求实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895e181cd8261c598f3261e657c28291.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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您最近一年使用:0次
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解题方法
【推荐1】已知函数
.
(1)求函数
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(2)若对于任意的
,总有
,分别求出a,b的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d6a778a3cc1fed3abdde70a968f3f0.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ff16773bd63036c8c881d8417ab555.png)
(2)若对于任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb2b8600ecb8ef110d829f4fa96fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d6f007d8bf33a04c3846a1175f5950.png)
您最近一年使用:0次
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【推荐2】已知函数
,
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适中
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【推荐3】已知函数
,
;
(1)求
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,对于任意的
都有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ff2bfb24c451ceabff9ee8b0c6c427.png)
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